| ID | Category [?] | Severity [?] | Reproducibility | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 08100 | Media Support | Major | Always | Oct 5, 2021, 15:35 | Apr 30, 2022, 02:21 |
| Tester | cuavas | View Status | Public | Platform | MAME (Official Binary) |
| Assigned To | Resolution | Fixed | OS | ||
| Status [?] | Resolved | Driver | |||
| Version | 0.236 | Fixed in Version | 0.243 | Build | 64-bit |
| Fixed in Git Commit | a7e49b6 | Github Pull Request # | #9625 | ||
| Summary |
 08100: osborne1 and clones: IMD disk image support is broken |
||||
| Description | IMD disk images don’t work properly, giving read errors from CP/M BDOS. The osborne1 driver is just an example, this seems to affect lots of systems with floppy drives. This is possibly related to the code that’s supposed to support reading alternate tracks when a high-density floppy image is mounted in a drive with coarser head steps. | ||||
| Steps To Reproduce |
Start osborne1 driver with a CP/M boot disk in the first drive and an IMD disk image in the second drive, using the default 5.25" SS DD drive option. The CP/M boot disk from the software list works. mame osborne1 -flop1 cpm22 -flop2 amcalla Hit return at the bootloader prompt, wait for the menu to appear Hit escape and wait for the CP/M “A>” prompt to appear Type B: and hit return Watch the “Bdos Err On B: Bad Sector” error messages |
||||
| Additional Information | |||||
| Github Commit | |||||
| Flags | |||||
| Regression Version | 0.228 | ||||
| Affected Sets / Systems | osborne1 and clones | ||||
|
Attached Files
|
 AMCALL.zip (28,460 bytes) Oct 5, 2021, 15:35 Uploaded by cuavas | ||||
 No.19310
Tafoid Administrator
Oct 5, 2021, 17:11
edited on: Oct 5, 2021, 17:12
|
Specific regression appears to be happening not on the initial IMD changes on January 9th, 2021, but sometime during January 10th, 2021 where a couple of follow up patches were made. Possible suspects: https://github.com/mamedev/mame/commit/73618d95dedeef48cc0f3e212826095ddca79c32 https://github.com/mamedev/mame/commit/81e5960881ddeb9680c86ed3e4a4e685920a1d96 |
|---|---|
 No.20130
cuavas Administrator
Apr 30, 2022, 02:20
|
This particular symptom seems to have been caused by using the image in a quad density drive. |