DiscOVER - Development Log ========================== This is a simple log of changes made between different releases of DiscOVER and MULTI_DiscOVER. This includes both facility changes and faults found and corrected. v4.20 (released ?????) - Added CDROM support. Initially only via QUBIDE interface although majority of logic is not bound to this interface. v4.16 (released 14/11/98) - Fixed problem (introduced in 4.15) with navigating up/down a directory tree using F2/SHIFT-F2 on devices with ahrd directories. v4.15 (released 11/10/98) - Improved checking of QUBIDE interface to allow for v2 ROMS (in preperation for adding CDROM support). - Fixed problem where if directory specified initially for an IBM format, no files are copied (was OK if started from root). v4.14 (released 03/08/98) - Changed checks for DOS format hard disks on QUBIDE. Needed to fix a problem reported by Phil Borman. v4.13 (released 25/07/98) - Rebuilt with latest compiler to avoid potential problems that were introduced into compiler libraries for standard QL systems. v4.12 (released 01/05/98) - Minor internal changes and tidying up. Should in theory have no visible effect. Changes made while investigating a problem that turned out to be a compiler bug. v4.11 (released 21/02/98) - Fixed problem that would stop IBM format handling sub-directories properly. Believe that problem introduced in 4.10 release, but it also affects floppies in IBM format. - Fixed problem with going up a level when a directory was specified in the settings for an IBM media. Used to not re-scan this higher directory level if not already read. - Changed calls to LIBLIST library to conform to v1.2 which requires an extra level of indirection on some calls. - Changed way that format specific vectors are handled. Basically this involved hanging a pointer to all format specific vectors off the DCB rather than having globally visible tables. Should be more effecient. v4.10 (released 28/07/96) - Upgraded IBM format to handle MSDOS primary partitions on an MSDOS hard disk. Aimed at supporting removable media attached to QUBIDE such as SyQuest. Written so that if we ever get the ability to read/write physical sectors on other systems (e.g. QXL, QPC) then should also work for them once physical access level added. v4.02 (released 10/06/96) - Corrected View disk details for QDOS ED disks giveing incorrect sector size warning. - Corrected View disk details for IBM HD disks giving invalid sectors per cluster warning. v4.01 (released 15/12/95) - The DiscOVER and MULTI programs are now a common binary. Whether the program will work in Demo version, Standard version or MULTI version now depends on the Registration key (if any) that has been used. v4.00 (released 01/09/95) - First release as shareware - Changes made to support registration process - Change made to handle running in un-registered mode (based on the previous demo mode but not quite as restrictive). v3.19 (released 14/07/95) - Another go at fixing the name conversion algorithm (IBM/CPM formats) for the case when there is no extension at all. v3.18 (released 07/05/95) - Fixed problem introduced in the new name conversion algorithm where the extension would be set up incorrectly if it was less than 3 characters in length. v3.17 (released 14/04/95) - Changed the name conversion algorithm used by IBM and CPM formats so that if the filename contains multiple 'seperator' characters then the last is used to identify the extension. Basically this just means that the extension is more likely to be what you want! v3.16 (released 18/03/95) - Fixed problem with Translates not working (this problem was due to an incorrect modification made at release 3.10). - Various minor changes to compile warning free with the latest version of C68. - Small improvement to disk detection algorithm that should reduce the time taken to detect a disk type. v3.15 (released 30/12/94) - Fixed problem whereby using Save_Settings would always fail (this was actually a bu in AS68 that generated incorrect code for label-label when the labels were in different sections). - Rewrote Save_Settings code to be much more compact. v3.14 (released 01/12/94) - Compiled with the latest version of C68. - Fixed new bug introduced whereby the "Create_Directory" call was being failed even if the create had worked. - Changed so that files now processed in forward direction in all formats except CPIO (which needs to be processed in reverse). - Reworked disk type identifying code. This should be more robust, but may be slower. Might need to revisit this code again? v3.13 (released 14/11/94) - Made changes to reflect Windows 95 beta 2. Much of the special code that was added in the 3.12 release is no longer required. v3.12 (released 11/10/94) - Completed implementation of file rename facility (available from directory screen). - Fixed problem that occurs when running on a PC fitted with a QXL and that is using the Windows95 operating system. In this case special action has to be taken to determine the true density of a disk. v3.11 (released 19/07/94) - Fixed bug introduced in handling of CPIO format in 3.10 (result is that program loops trying to initialise drive. - Recompiled programs with version of C68 that fixes potential problem in optimiser when 'hook' operator used as part of an expression. - Reworked Disk "Auto recognition code" to reduce number of failures that are necessary (in worst case) to recognise the disks physical characteristics. - Set up DFS and CPM mpdules so that Single Density drives can be open using either "*d?s" or "*d?d" type names. This allows for the situation of having a system where the drive is switched to single density mode via hardware rather than software. The "*d2s" option is always tried first to cater for the case of the software supporting it, and then the "*d2d" option if that fails. - The notes on how to modify a disk interface to support single density disk drives has now been merged into the main DiscOVER documentation as an appendix. v3.10 (released 08/05/94) - Added the Quick Format option. This involved completely re-working the existing format code. Hopefully this will also result in the removal of certain problems that can occur on some systems, especially when formatting HD disks. - Changed internal reply standards so that 0 indicates sucess, and non-zero indicates failure. This follows normal C library standards, and also makes it easier to pass back details of error conditions. - Made appropriate changes and added casts to get warning free at level 6. - Major restructuring of code associated with opening and initialising drives. This has resulted in a significant rationalisation of this code which makes it smaller and (hopefully) less error prone. v3.09 (development only - not released) - Corrected a problem with copying from IBM to QDOS format if the source file is in a sub-directory. The files were being correctly listed for selection, but then not being found when trying to open the source file to actually do a copy due to a fault in setting the directory path correctly. v3.08 (development only - not released) - Added saving the current order for checking for different disk densities to the information that is saved when saving parameter settings. - Allowed for the fact that QXL systems open HD disks under the "*d2d" file mneumonic as well as DD ones. v3.07 (released 29/10/93) - The ST/QL systems from the E32 drivers onward seem to have developed a problem if the guardian window is closed before the program terminates. This close is therefore removed, so that the close is left to the operating system which makes the problem disappear. This is technically a bug in the E drivers, but at least this stops the problem occuring. v3.06 (released 17/10/93) - Corrected problems with the Save Settings option. This had resulted from making assumptions about the layour of memory that broke down when switching to C68 v4. Removed the need for those assumptions. - Fixed problems with "View Details" for QDOS. - Minor changes to the documentation v3.05 - Fixed problem with CPM format whereby erased entries would be ignored when looking for free directory entries. This could incorrectly result in "Directory Full" messages. - Fixed problem in CPM format which could stop the data really being written to disk for a file although the program would function apparently normally (until you tried to look at the file contents!). - Fixed problem with all formats whereby if a failure occured in the Open_New() routine, after reporting an error, a file copying screen would appear (even though output is being discarded!). - Corrected problem in translates for characters larger than 127. This was a re-occurence of a similar problem in a previous release where a field had been treated as signed instead of unisgned. v3.04 (released 01/09/93) - Corrected problem where files in QDOS sub-directories were being missed if they had a different case for the sub-directory part to the value entered by the user (case should be ignored). Problem introuced in v2.31 as result of trying to keep case of QDOS names. - Additional information in file header now preserved if copying between QDOS type media (filetype, dataspace etc). - Formatting an IBM disk changed so that the boot sector is now identical to a similar sector on one formatted under MSDOS 5.0. Attempts to boot off this disk will now produce "not a system disk" message. - Made QXL compatible by adding a small (0.5 second) delay before displaying the initial screen. This gives the QXL time to get cacheing back on! (This is really a SMSQ bug and so may be fixed in later versions of SMSQ). v3.03 (released 15/08/93) - Corrected problem whereby using F1 to change device name could cause name to be truncated to an underscore character. - Corrected problem (introduced in v2.32) which would cause attempts to format IBM disks to have unpredictable effects and probably cause the system to crash. - Added small optimisation to deciding what density disks are in use, by giving preference on a new attempt to an option that succeeded last time. This should be of particular benefit to Gold Card users who are quite] likely to have both HD and DD (plus possibly ED!) disks to handle. - Corrected a problem on the PLUSD format whereby genuine Spectrum Plus D disks (as opposed to Sam Coupe ones) were always coming up with a file size of zero. v3.02 (released 01/07/93) - Made changes for errors/warnings detected by C68 v4 beta v3.01 - Fixed problem with Spectrum disks for files that are on the second side (the sector number calcualation was wrong in this case). - Changed updating of "Copy Bar" to use no timeout so that the copies can continue in the background under the pointer environment. v3.00 - Add Spectrum DISCIPLE format to the list of formats that are supported by MULTI-DiscOVER - Reworked method of determining disk density when it is not known - Corrected problem with formatting IBM HD disks. - Added CPM Definition file for PCW 720K format (sample from Simon Goodwin) - Corrected a bad pointer problem with "Reset IBM Definition" which could have unpredictable effects - but normally hangs the program. *----*----*----*----*----*----*----*----*----*----*----*----*----* v2.32 - Make it an error to try and view details on devices that are not floppy disks. - Corrected QDOS View Disk details to correctly show Density (it was always showing it as Double even when it was not) v2.31 (released 15 Nov 92) - Fixed problem with leaving directory channels open when going down a level with QDOS V2 filing systems and 'hard' directories. - Error message now output if attempt made to format ED disks in any mode but QDOS as the sector size is incorrect. - Fixed problems with formatting disks in HD mode, due to the fact that after the QDOS format phase completed the drive was not being opened in the correct density mode. v2.30 (released 26 Oct 92) - The VIEW disk parameters option did not allow for HD and ED disks. - Made changes to get source to compile error free at c68 warning level 5. v2.29 (released 1st Sep 92) - When writing IBM files, the date was being set incorrectly. This was dues to using the gmtime() function which was returning NULL. used instead the localtime() function. v2.28 (released 12th Aug 92) - Minor changes to replace calls to Lattice specific library routines, strpm() and stch_i(), by calls to standard library routines, strtol() and strstr(). - Recompiled with C68 Release 3.02. v2.27 (released 19 Jul 92) - Corrected QDOSBios driver to get correct medium size when using Level 2 drivers. - Corrected bug in IBM/Atari driver that meant that a deleted file in the middle of a directory could cause problems. - Allowed for letters W/R/F/M for WIN/RAM/FLP/MDV when accepting device numbers - Allowed device number range to go as high as 8 - Changed use of function keys when list of files displayed to be more compatible with QRAM/QPAC standard. - Added check for CPIO disk to IBMBios as appears to have a problem if you specify IBM mode on a CPIO disk!. - When preparing to copy files, the directory of the target device is read prior to the directory of the source device. This ensures that the target is of the correct format. - Added support for "Hard" Directories on QDOS media. v2.26 (released 06 May 92) - The changes made to allow gold card to recognise HD and ED disks (only HD validated so far). - Corrected problem that could cause copying of a file to repeat endlessly if source was from QDOS V2 file system and file in a hard directory. - Added new error message for situation when trying to format/Write to a device that was set to read only. - Corrected problem with releasing memory that under certain circumstances (which are not clear as it does not always happen) can cause the system to crash. - Made changes to get all the source to compile without any warnings at the warn=4 option of C68. - Converted date and time routines to ANSI style ones. v2.25 (released 09 Apr 92) - The CPIO format was no longer recognising pre SVR4 disks as valid. v2.24 (released 14 Mar 92) - Changes to be compatible with C68 Release 2 - Corrected fault that occurs when copying from QDOS device with Level 2 drivers (e.g. ST/QL or GoldCard) with Hard Directories. This could cause program to loop. - Changes made in preperation for supporting HD and ED disks in the IBM option on Gold Card systems. Facility not available in this release. - Corrected fault which caused "Number of Sides" under VIEW option to be displayed as 0 rather than correct value. v2.23 (released 29/09/91) - Error corrected in handling of translate option. Attempts to translate characters with a value greater than 127 caused random values to occur. Problem believed to have been introduced at v2.21 with switch to C68. v2.22 (released 20/08/91) - Changes made to support revised MENU routine - Hard Directories on QDOS media recognised as such and indicated as such when giving a file list. v2.21 (released 15/07/91) - Changes made to allow C68 to be used as the C compiler - If format option taken and device name changed, then although correct device formatted, it was always the TargetDevice that had the alien directory written to it instead of the one just formatted. v2.20 (released 15/05/91) - The ToOctal, FromOctal, ToHex and FromHex calls in CPIOBios_c removed by using sscanf and sprintf calls instead. - Drive Type check enhanced to allow for disks of 40 tracks (or less) in 80 track drive where every track is readable (i.e. only first 40 tracks of an 80 track disk have been used). - The writing of CPIO headers enhanced to set the mode field to octal 100600. On MINIX, afio was complaining that file type invalid. v2.19 (released 11/03/91) - A problem fixed that caused a lock-up when displaying a CPIO directory with any of the files in a sub-directory. - A problem fixed that caused a lock-up when attempting to scroll off the bottom of an incomplete directory page. - New 'Generic' routines for UP and DOWN directory levels introduced. As part of this 'DirectoryChar' field added to DCB. v2.18 - A bug in "SECTOR_IO_ABSOLUTE" meant that a sector I/O fail would be reported if a disk was write protected as any successful read of a sector would promptly try to write it! Bug introduced in v2.16. - Writing of Unix CPIO files was failing due to check for free space being incorrect. - Writing was also failing due to errors in the "CPIO_FIND_DIRECTORY_ENTRY" routine. - The last file on a Unix CPIO disk was not being deleted. This turned out to be a more general problem that could occur any time that the file header started on a sector boundary. - The BIOS routine has had all the vector tables moved to the front of the source and renamed. This adds to the clarity of the source. - Routines READ_FILE_SECTOR introduced as a generic equivalent to the specific ones in the DFS, ADFS and CPIO modules. - A short delay introduced into the viewing loop to give time to see the text. - View Devices changed to ?? - Viewing details of CPIO disk was not showing extra prompts - Viewing details of QDOS disk was not working. This was due to 'reply' not being set. Drive was also being left open. - Problem in scrolling up fixed. Symptom was that subsequent down scroll would not display files previously displayed at bottom. - Method of handling sector buffering completely rewritten, This should fix bugs in CPIO format. Also provide basis of caching if wanted later. v2.17 - IBM Format option has boot block signature ($55AA) inserted in last two bytes to keep virus checksers happy. - QDOS_GET_LIST amended to ignore errors trying to open a file if it returns "In Use" - the file is not listed however on the directory. - Memotech MTX512 DS added to CPM formats. v2.16 (released October 1990) - Formatting options added. At this stage, only QL, IBM and CPIO formats supported. - 'Sector_IO_Absolute' routine rewritten. - Changes for Amiga begin, (but code only activated in test versions). v2.15 (released July, 1990) N.B. This version was the first version of DiscOVER that was released directly and not via PDQL. - The name conversion routines altered to not make any changes if source and target same format. This stops special characters such as underscores causing name changes when not required. - When an I/O error occurs, a message added to prompt check of write protect tab on disk is not the cause. - Internal checks on memory allocation added to try and detect why DiscOVER (sometimes) crashes on the Thor. - Translates cleared if format changed. - 'ADFS_Make_ConvertName' routine added v2.14 N.B. This version never released. Sent to Chas Dillon for investigation of the Thor compatibility problem. - Re-compiled using a new version of PDQC and the new linker that will be part of the PDQC compiler. This results in significantly smaller program size. - Internal diagnostic checks improved to try and determine why DiscOVER (latest versions) does not appear to work on the Thor. v2.13 (released 22/10/89) - The date on files written to IBM disks was 1 month out (but read was now correct). - A number of the prompts at the foot of the screen were badly aligned. - When writing CPM files, the file length was being rounded down to a multiple of 128 rather than up. This could result in data being lost at the end of the file. - Changes made to use PDQC (Beta test version) instead of QLC. The main visible result is that PROG_USE and DATA_USE defaults are used when opening Translate and Format defintion files. The programs are also slightly smaller in size. - Efficiency of 'Read_File' and 'Write_File' improved and main copying loop re-written, resulting in almost a doubling of copying speed. - Diagnostics prompts added to start-up code - All 'Intel' and 'Octal' routines moved into DJW_LIB library. - 'Answer_YN' and 'Answer_QANY' moved to SHOW module. - Option to save the majority of the current parameter settings added to the facilities available from the main menu. IBM_Save' added to save format definition area. CPM_Save' added to save format definition values added - In the Text module, many pointers to text changed to text arrays. ** - Headings in the title window were not correctly centred if the string defining them contained trailing spaces. - The OEM name was not being shown when viewing IBM disk parameters. - When asked if a new directory should be created, trailing spaces were not being truncated from the name displayed which made the message look rather strange. - A number of the prompts at the foot of the screen were badly aligned. - When writing CPM files, the file length was being rounded down to a multiple of 128 rather than up. This could result in data being lost at the end of the file. v2.12 (released 30/03/89) - When copying to an IBM sub-directory, an error 99 16 would occur when it was needed to extend the sub-directory. - Date for IBM files would be one month out. - The path name displayed for ADFS files would include the trailing CR characters (which show as 'splodges' on screen). - Failures on opening a drive would correctly give an error message, but the calling routine was not detecting the error condition. - Standard DiscOVER would give a message 27,0 instead of 'disk full'. This was due to this error message only being included for MULTI. - The algorithm for converting names to IBM/CPM format was not handling separators correctly. This could result in strange looking names. - Wherever relevant, changes made to use new 'ShowPrompts', 'ShowVariables' and 'Menu' routines. This means major changes to some of the structures in the Text module (although the text itself has not changed). - The front screen layout revised to incorporate some of the lower level menus onto the one screen. - When a format definition file has been loaded, then the "Format Name" field is now displayed as part of the device details. - Target file is now opened before Source file. This should gives tidier error handling. - The CPM module enhanced to be able to handle the CPM format used by the Z80 second processor on BBC systems. This has meant the introduction of a new parameter option in the Format definition file called 'SECTOR FACTOR'. - Interlace redefined so that value is distance to next sector, rather than number missed. This changes default from 0 to 1. - The structure used for text messages are modified to use the generalised routines from the DJW_UTILITY C library (although the actual wording is not changed). - 'Copy_Single_File' amended to open target file before source file as this is more efficient on error paths. - 'Copy_Single_File' amended to move for checking for the existence of a file to the generic 'Open_New' routine. - 'ROOT' and 'SPECIAL' modules merged into one module. - Code to handle file already existing moved to 'Open_New' from ROOT module to improve efficiency. - "SHOW" and "SCAN" modues merged into single module. - Screen not cleared until Directory read finished - Modified to use new standardised display routines from the DJW_UTILITY library. - Screen showing device drive,type & directory amended to also show format name (if loaded) for IBM and CPM devices. */ - IBM date was being calculated 1 month out for new files. - 'IBM_Extend_Directory' removed. Routine was not called as code for this also in 'IBM_New_Directory_Entry'. - 'IBM_New_Directory_Entry'. Code for extending a directory completely re-written. - 'IBM_Set_Position' removed as no longer used. - IBM FAT search routines speeded up by keeping track of the first free entry and the last used entry. - 'IBM_Make_InternalName' routine improved to handle seperators better when deriving the extension. - New routine 'QDOS_Find_Directory_Entry' added. - Updated for revised Prompt structures. - Handling of CDOS System Label/Time Stamp entries improved - 'ADFS_Down_Directory_Level' modified to not include CR's in the path name. - 'CPIO_Open_Drive' reorganised to improve error handling - Error messages revised so that all error messages up to 27 now also apply to standard DiscOVER. ** v2.11 (released 08/01/89) - Copying to/from IBM sub-directories could fail with 'unable to set path' if the directory name was less than maximum filename length for the format. - The settings of the 'InterLace' and 'Skew Factor' parameters were being ignored when converting Logical sector numbers to physical ones. This would result in the incorrect handling of CPM formats which had either or both of these set non-zero. - UNIX CPIO disks were being copied incorrectly. The begining of the file would be lost, and there would be extra data after the end. This was due to a mistake that had been introduced into the buffer handling! - Specifying All to overwrite would result in files after the first failing with a 'Cannot open target file' message - The memory allocation mechanism was altered to use the QDOS Common Heap mechanisms rather than C ones. As a result the option to specify run-time memory allocation is now irrelevant. The program will also use less memory in its quiescent state. - The need to specify a 'dummy' parameter before the 'retries' parameter has been removed. The loading instructions in the User Guide have been updated to reflect this. - The IBM and BBC ADFS formats will now allow new sub-directories to be (optionally) created when writing to a disk in that format if they do not already exist. - 'Read_Source_Record' routine removed as no longer used. - 'Copy_Single_File' amended to allocate Record buffer - Error messages giving sector number now give it as 3 numbers in the order track side sector. - Error 99,10 removed from 'IBM_Down_Directory_Level', and error code passed up a level instead. - New IBM sub-directories can now be created on writing. - 'IBM_Calc_Sector' amended to allow 'ReservedSectors' to be handled in BIOS routine 'Sector_IO'. - 'CPM_Calc_Sector' amended to allow for ReservedSectors to be handled in 'Sector_IO' routine. - 'IBM_Set_File_Position' modified to give better error reporting. ** - 'DFS_Show_Disk_Details' amended to use 'BBCText' and 'BBCdata' instead of 'DFSText' and 'DFSData' - 'DFS_Open_Drive' reorganised to give better error handling - 'ADFS_Open_Drive' reorganised for better error handling - 'ADFS_Down_Directory_Level' modified to support CreateFlag. - 'ADFS_Create_Directory_Level' routine added. - ADFS ReservedSectors changed to 0 for correct handling of the InterLace and Skew Factor elsewhere. - 'ADFS_Show_Disk_Details' amended to use 'BBCText' and 'BBCData' instead of 'ADFSText' and 'ADFSData'. - Prompts added to Text module for creating new sub-directory level. - 'DFSText' and 'DFSData' renamed to 'BBCText' and 'BBCData' in Text module, and corresponding ADFS entries removed. v2.10 (released 10/12/88) - When writing an IBM disk, the data was not being written to file unless the file was more than 512 bytes (1 sector)long. - The program could lock up (normally giving a QDOS directory) on some systems. This was (finally!) identified as being due to the fact that no DataSpace was being set in program file header (8 bytes needed). This problem would not arise any time the EXEC/EX commands were redefined to the standards of Toolkit2. as they always set at least 12 bytes. - Performance improvement made to IBM routines for finding free FAT by remembering last successful point. - 'Close_File' amended to ensure that buffer flush always occurs before state of flags tested. - ADFS Bios - The number of sides on a disk was being calulated wrongly. As a result a value of two would always be set. v2.09 (released 19/11/88) - The program would fail (without giving an error message) when trying to get a directory of an Atari single sided disk. - The IBM Bios routine was allocating more buffers than it needed, and then not releasing all of them. This would eventually lead to an 'Out of Memory' error, particularily on a disk with a lot of Sub-Directories. - 'Menu' amended to allow for InitialOption parameter being out of range. - 'Bytes_Copied' routine amended to show copy progress as a bar in the status window. - View routine amended to display progress as a bar in the status area. - 'IBM_Open_Drive was not using the number of sectors/track from the boot sector. This would mean incorrect handling of formats which did not have 9 sectors/track or a format definition file. - IBM_Open_Drive changed to exit with 'good' return if 'msgflag' parameter set to YES. - The IBM routines to go up/down directory levels were allocating superfluous buffers, and never releasing them. - 'QDOS_to_IBM_Date' merged in as only called once - 'QDOS_Close_Drive' removed as all actions covered by the generic 'Close_Drive'. - Error in 'Down_Directory' corrected - 'Close_File' made more generic so that vectored routines need only be called if file was open for writing. - 'IBM_Close_File' amended to bring it in line with the new more generic 'Close_File'. - 'CPM_Close_File' routine removed as now covered by the new generic 'Close_File'. - 'DFS_Close_File' removed as now covered completely by the generic 'close_file' routine. - 'ADFS_Close_File' routine amended to bring it inline with the new more generic 'Close_File'. - 'CPIO_Close_File' routine amended to bring it in line with new more generic version of 'Close_File' - 'DFS_Write_File_Sector' removed as it was only a dummy. - 'ADFS_Write_File_Sector' removed as only a dummy. - 'CPIO_Write_File_Sector' removed as it was only a dummy. - 'QDOS_to_CPIO_Date' merged into body as only called once. - 'CPIO_to_QDOS_Date' merged into body as only called once. - 'CopiedText' removed from Text module as no longer needed. v2.08 (released 14/11/88) - 'IBM_Find_Directory_Entry' was NOT exiting when it had run off the used entries, and no check had been included for end of directory. - WARNING and ERROR text moved to 'Text' module. v2.07 (released 07/11/88) - The CLOSE_FILE routine in the BIOS module was not releasing the I/O buffer associated with an FCB. This would result in an 'Out of Memory' error eventually occuring. - CPM files with no extension would have an underscore appended to the QL version of the name. v2.06 (released 04/11/88) - If an error occured locating a directory entry, then an attempt woould be made to delete the file anyway, which could result in the program looping. - When obtaining a file list for QDOS format as the target, the path name would be taken fromm the source directory. - When writing to QDOS floppy disks, then the first four bytes (the Format Id field) could be overwritten with zeroes. This was not consistent and appeared timing dependent. The routine to read the first sector of a QDOS floppy disk was moved to only be done when viewing the Disk parameters which cured this problem. - The DBG points in the modules BIOS, IBMBIOS and QDOSBIOS were altered to use bit dependent level numbers. - 'IBM_Find_Directory_Entry' was exiting prematurely if entry for a deleted file was found - Error in 'Delete_File' corrected - QDOS Filenames were incorrectly being displayed with all spaces removed. v2.05 - If an invalid key was pressed when on the first item of a menu, the program would go into a loop (lock up). - Writing of CPM disks where the file was larger than a single extent would corrupt the target directory. This was because the director entry was not being initialised properly. v2.04 (released 19/10/88) - When writing CPIO format, File Headers not being written at correct position on the disc. - When reading CPIO format, any zero length file would be treated as end of data (ie FileName was not checked). - When opening a QDOS media as Source, the file length was not being set up in the FCB. This could cause problems when target neded length in open (DFS, CPIO, etc). - When writing a QDOS format, some disk interfaces did not like the fact that the directory was kept open. It is now therefore closed whenever a file is opened on a QDOS medium. - The names being displayed in File Lists always included the path data. This is only required for QDOS format media. - The file length for IBM media was being calculated incorrectly by using two bytes rather than four. - New SIDE USAGE option of REVERSE added for CPM formats for case when second side of disk is used before the first one. - The 'main' procedure can now take a parameter specifying the retry count for Sector IO. - Tranlasation prompts changed to ST and TS to reflect change to Source and Target working. - 'Menu' amended to stop lock-up occuring if invalid key pressed when current selection is the first one. - IBM Format file data not being moved correctly into position to be used v2.03 (released 05/10/88) N.B. First version released by PDQL to limited number of customers. - Corrected problem where DFS and CPM formats could corrupt disk when writing if files had become fragmented (due to error in 'Free_Space_Remove' routine). - Support for CPIO format completed - Checks added to CPM directory read routines to detect inconsistancies in Directory Entries. - CPM format will now allow for Time Stamp and Volume labels. NOTE. They are skipped over without the data in them being used on reading or updated on writing. - Reading Directory' message displayed when accessing the Target disk. - IBM Media codes F7 and F8 added to recognised list - 'IBM_Open_Internal' rewritten to be more efficient and to use generic routine 'Initialise_FCB' - Free Space calculation adjusted - I/O Buffer Allocation moved to 'Initialise_FCB' - "Reading Directory" message moved to 'Initialise_Drive' - CPM Free space was not being calculated correctly unless cluster size was exactly 1 sector. - CPM code added to reduce amount of directory searched for entries both when initialising drive, and also when looking for a particular filename. - DFS bios - Error message now returned if free space list not OK v2.02 (released 24/09/88) N.B. Passed to PDQL as basis for first Customer release - Support for CPM format completed. v2.01 N.B. Development version only. - 'Menu' amended to allow multiple occurences of the same initial letter, and for ENTER to be the only accept option. - Generalised List Handling routines added. - Support for BBC DFS and BBC ADFS formats completed. v2.00 N.B. This was a development version only. It had major faults and /omissions in many of the Bios modules. It was intended primarily to allow for evaluation of the new User Interface and revised internal structure. The program was now available in two versions. The standard DiscOVER supported IBM fas an alien ormats while MULTI-DiscOVER would support additional ones. - Corrected problem of reporting 'Disk Full' on IBM media when there was still some space (typically 5K) left. - Host/Alien concept changed to Source/Target concept - Independent selection of formats for Source and Target introduced. - Date and Time stamping introduced where relevant. - Total and Free space added to Directory displays. - Date/Time added to Directory Displays. - Major upgrade of user interface to use a more intuitive approach to option selection. *----*----*----*----*----*----*----*----*----*----*----*----*----* v1.15 - Cleared problem where when copying to IBM disk and a file existed, then the copy would be abandoned (with an erroneous 'unable to delete' message) after deleting the file. - The Translate option incorrectly needed a space between file entries. v1.14 N.B. Agreement reached with PDQL to market this product. Software renamed to DiscOVER (was previously called IBMCopy). - Translate option expanded (by CD) v1.13 - Corrected problem where the Error message routine was not producing the correct QDOS sub-description message. - Corrected problem when copying to IBM disk and a file existed, then the copy would be abandoned (with an erroneous 'unable to delete' message) after deleting the file. - Text moved to separate module to allow easy production of foreign language variants. v1.12 N.B. This version was passed to PDQL so that it could be evaluated as a possible product for them to market. - Corrected problem where if there were no files in a directory, the program would lock up after it had attempted to read the directory. - Corrected problem where if you were at a second level of sub-directory, then an attempt to move up a level would cause error 99 9 to occur. - Corrected problem where if a target IBM disk contained no files and no volume labes, then error 99 5 would be reported. - Corrected problem where when writing to an IBM disk, only the first copy of the updated FAT would be written (error introduced in v1.11). - Corrected problem where if an error occurred when writing to a file, then the error would occur twice (2nd time when closing file). Also, the copy would not abort but continue to try the next file. - Corrected problem which could make the program think that a QL had a 40 track drive rather than a 80 track drive. This could occur if a disk that had previously been initialised as 80 tracks was then re-initalised as 40 track on a High Density IBM drive IBM (using the /4 option to FORMAT). The algorithm for determining drive type was modified to stop this happening. - Corrected problem where the default data translation (which should have no effect) would erroneously convert charaters above ASCII value 127 to arbitary values. - Added option for a user to supply his own IBM disk definition was added. - The unit of copying was changed to 512 bytes to speed it up. - The concept of an 'outlined entry as removed. Current entry now indicated by cursor flashing next to it. v1.11 (released 21/04/88) - Corrected problem where delete of IBM files was not working properly. The file listed as about to be deleted always corresponded to the file that was on line 1 of the file list at the time the ENTER key was pressed to action the deletes. - Corrected problem where View file of a QL file would cause the mesage "Unexpected Error 99 3". - Corrected problem where View file of an IBM file would not outline the original selected entry. This could cause subsequent 'lock up' unless the ESC option was used to return to top menu. - Corrected problem where the option to change a drive number by pressing the numeric key was not working for QL devices. - Added option to change directory levels within a QL device. IBM option rationalised to use F4 to go down a level, and SHIFT F4 to go up a level. The display of the IBM file '..' was suppressed. - Delete file process speeded up by using Directory Entry number instead of filename to find file to delete. v1.10 (released 18/04/88) - Corrected problems with Sub-Directory handling. - Corrected problems with cpying to an IBM disk. - Option to Delete QL Files added. v1.09 - Sub-Directory handling completed. v1.08 N.B. Sent to a number of friends to see if they could break it, and to get feedback on facilties offered. - Serial Number display on title screen added. v1.07 - All Device and Directory set options combined on a single screen. v1.06 - Data Translation facilities added. v1.05 - The View file facility added v1.04 - Added facilties for editing of the Device/Directory names. v1.03 (Released 18/03/88) - Corrected problem with the last character of the version number being ommitted on the title screen. - Corrected problem when copying to an IBM disk which resulted in the QL file size being rounded up to a multiple of 128. - Corrected problem which meant that the F1 option to select all files in a Directory would also select Sub-Directory entries. These files could then not be de-selected. The copy process would then copy a zero length file to the QL media. - Corrected problem that the first file on a QL device was always being ommitted from the list offiles displayed (and therefore could not be copied). v1.02 (Released 10/02/88) - This version was the first released version of the IBMCOPY program (written in C). N.B. It does not support Directories on the IBM disk, although much of the front-end code is already present. v1.1 - Development version only. Incorporates first level of feedback. v1.0 - Rewritten in C. Development version only. Used to get initial feedback on approach used. *----*----*----*----*----*----*----*----*----*----*----*----*----* v 0.5 - Prototype of IBMCOPY (written in BASIC) to check feasability of concept