08872: ibm6580: Emulation Just Hangs with lights EFGH on solid no disk activity. (yes I realize it is an incomplete driver) 8-)

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
08872	Crash/Freeze	Minor	Always	Jun 6, 2024, 08:32	Jun 7, 2024, 03:31

Tester	GeoKM	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Open	OS	Windows 10/11 (64-bit)
Status [?]	Confirmed			Driver	ibm/ibm6580.cpp
Version	0.263	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	08872: ibm6580: Emulation Just Hangs with lights EFGH on solid no disk activity. (yes I realize it is an incomplete driver) 8-)
Description	I was just hoping to try out this driver, even though the sound does not work (Did it even have sound?) to compare the results with 2 Real Machines at the ACMS Museum in Sydney that I am restoring. Who would be the main Dev for this driver? I have seen YT Video's of it actually working in a much older MAME version. Just wondering what broke it? I would like to help and get the driver working again 8-) Though I'm not a programmer! Thanks.
Steps To Reproduce	Boot System, immediately Hanges with light EFGH on solid.
Additional Information
Github Commit

Flags
Regression Version
Affected Sets / Systems	ibm6580

Attached Files

No.22173 Robbbert Senior Tester Jun 6, 2024, 09:30 edited on: Jun 6, 2024, 09:31	The machine is marked as NOT WORKING, which makes this an invalid report. However I'll leave it for the devs to decide. I did a quick debug session, and found that at around FC373, an incorrect result is input from port 14 (PPI8255). The machine therefore HALTS. If you bypass that failure, then the machine says 801 05 05 along the bottom line of the screen, and only the E led is on. Then the machine seems stuck in a loop. You can obtain the dev name by looking at line 2 of the source code.
No.22179 GeoKM Tester Jun 7, 2024, 03:31	Thanks Robbbert, Yeah I suspected the report might get invalidated. 8-( Its an interesting conundrum, the 801 looks like a real 6580 error I'll have a look in the Maint Manual and see if I can get more detail 8-) I wonder what broke it! as there is a video on YT of it working and booting of a CE Drag disk image. 8-) Its time like this that I wish I was an actual programmer!.

No.22173

Robbbert

Senior Tester

Jun 6, 2024, 09:30

edited on: Jun 6, 2024, 09:31

The machine is marked as NOT WORKING, which makes this an invalid report. However I'll leave it for the devs to decide.

I did a quick debug session, and found that at around FC373, an incorrect result is input from port 14 (PPI8255). The machine therefore HALTS.

If you bypass that failure, then the machine says
*801* 05 05
along the bottom line of the screen, and only the E led is on. Then the machine seems stuck in a loop.

You can obtain the dev name by looking at line 2 of the source code.

No.22179

GeoKM

Tester

Jun 7, 2024, 03:31

Thanks Robbbert,

Yeah I suspected the report might get invalidated. 8-(

Its an interesting conundrum, the 801 looks like a real 6580 error I'll have a look in the Maint Manual and see if I can get more detail 8-)

I wonder what broke it! as there is a video on YT of it working and booting of a CE Drag disk image. 8-)

Its time like this that I wish I was an actual programmer!.