C64 Bios MAMELog Results

[teol]

Here are the results of the 0.143 C64 bios in MAMEHub which MAMEHub itself reads but it doesn't work. Hopefully with this you can get it to work with the fast running cart software at least in the future.

Creating server on port 5805
SETTING SECONDS TO : 0
SETTING TIME TO : 0,0,0,0,0,2000,6,0,0
SETTING TIME TO : 0,0,0,0,0,2000,6,0,0
OPTIONAL 901229-04.uab5 NOT FOUND
WARNING: the system might not run correctly.

-----------------------------------------------------
Exception at EIP=01A3C0C3 (not found): ACCESS VIOLATION
While attempting to read memory at 0000003C
-----------------------------------------------------
EAX=003D6630 EBX=00000000 ECX=00000000 EDX=FFFFFFFF
ESI=00000000 EDI=00000000 EBP=0023B0E8 ESP=0023B09C
-----------------------------------------------------
Stack crawl:
0023B0A0: 01A3C0C3 (floppy_drive_get_current_track_size+0x0033)
0023B0B4: 0101B46F (c64h156_device::read_current_track+0x003f)
0023B0BC: 00FE5D56 (c1541_device::on_disk_change+0x0016)
0023B0E8: 01A3C3E7 (device_unload_floppy+0x0027)
0023B0FC: 01A9B496 (legacy_image_device_base::call_unload+0x0046)
0023B110: 01B24BA1 (image_unload_all+0x0041)
0023B194: 01B24F1E (image_postdevice_init+0x015e)
0023B1A8: 019C7121 (driver_device::device_start+0x0051)
0023B1E0: 019CD2BA (device_t::start+0x006a)
0023B634: 019CC8D5 (device_list::start_new_devices+0x00a5)
0023B644: 019CC826 (device_list::start_all+0x0116)
0023B688: 019C4371 (running_machine::start+0x0421)
0023D4CC: 019C54BD (running_machine::run+0x057d)
0023DE0C: 01A36C93 (mame_execute+0x01b3)
0023F598: 01C9963F (cli_frontend::execute+0x055f)
0023F89C: 01C4F80A (utf8_main+0x015a)
0023F8BC: 01C4F665 (wmain+0x00c5)
0023F904: 01CA14C5 (__tmainCRTStartup+0x010b, f:\dd\vctools\crt_bld\self_x86\crt\src\crt0.c:278)
0023F910: 75F0D309 (BaseThreadInitThunk+0x0012)
0023F950: 771416C3 (RtlInitializeExceptionChain+0x0063)
0023F968: 77141696 (RtlInitializeExceptionChain+0x0036)

[Krusty]

C64 support in MAMEHub is very preliminary at the moment.

I'm guessing you're trying to load a cartridge or a tape into MAMEHub but only floppies will work currently.

What is the file name (with extension) of the C64 game you're trying to load?

[teol]

The one built into the bios.

Also it's awesome that floppies work on this system.

The blog says a500n is supposed to work as well but it seems broken as the bios for 0.143 won't load in MAMEHub as with the Famicom one.

[zambr123]

The other issue here, is MAMEhub supports only consoles at present, but home computers will have to work slightly differently, in effect, it would be like both players using one console gamepad.

That's because there is only one input device to a home computer, the keyboard (ignoring the mouse) which both players would need access to.

Will be interesting to see how you get round that issue, it's not as easy as it sounds. Could have it for 2 player support only to keep it simple, one joystick player, other on keyboard.

I can't wait to see ZX Spectrum and C64 support in MAMEhub. Will be awesome

[Krusty]

Sept 9, 2011 9:37:49 GMT -5 teol said:

Here are the results of the 0.143 C64 bios in MAMEHub which MAMEHub itself reads but it doesn't work. Hopefully with this you can get it to work with the fast running cart software at least in the future.

Creating server on port 5805
SETTING SECONDS TO : 0
SETTING TIME TO : 0,0,0,0,0,2000,6,0,0
SETTING TIME TO : 0,0,0,0,0,2000,6,0,0
OPTIONAL 901229-04.uab5 NOT FOUND
WARNING: the system might not run correctly.

-----------------------------------------------------
Exception at EIP=01A3C0C3 (not found): ACCESS VIOLATION
While attempting to read memory at 0000003C
-----------------------------------------------------
EAX=003D6630 EBX=00000000 ECX=00000000 EDX=FFFFFFFF
ESI=00000000 EDI=00000000 EBP=0023B0E8 ESP=0023B09C
-----------------------------------------------------
[...]

First of all, thanks for posting about this issue to the forum.

I was able to recreate and review this problem. This is a case of a false positive being picked up by MAMEHub audited. You are not loading the C64 BIOS when this happens.

When you point MAMEHub towards the entire MESS 0.143 BIOS ROM set, the result will look like this:




An examination of the MAMEHub cache file* reveals something like this:

"c64": {"Carwars II - The Next Night (PD)[cr RR][Created with SEUCK]": "F:/roms/MESS 0.143 BIOS ROMs - (204 MB)\\astrocde.zip"} <--- not a C64 software


So it seems the astrocde BIOS (Bally Professional Arcade) has the same exact CRC32 as this "Carwars II" C64 software.

The result is that MAMEHub is confused over the duplicate CRC32's and thus you are trying to load the astrocde bios as a C64 floppy image.

This is something that should be resolved in the future when an updated c64.hsi hash file is added to MAMEHub. For now, it is not advisable to point MAMEHub towards the entire MESS 0.143 BIOS ROM set. Instead, you should copy BIOS files in to MAMEHub that you need individually on a per-system basis.

* mamehub\dist\CART5.dmp

[Krusty]

Sept 15, 2011 14:05:39 GMT -5 zambr123 said:

The other issue here, is MAMEhub supports only consoles at present [...]

Currently, MAMEHub does have very rudimentary support for a few vintage computers. c64 and c128 were added as -flop parameters*. a500n, a800, a800xl, a130xe, pc, x68000, apple2, apple2gs were added as -flop1 parameters**.

This means that MAMEHub will attempt to load a software image using the specified alternate parameter (-flop or -flop1 instead of the default -cart).

I forget exactly when those parameter exceptions were added. It was probably in July.

* see line 164 of MAMEHub.py
** see line 170 of MAMEHub.py


Detail:

These systems can work but only under limited circumstances. Only the host will have control of the keyboard. If the Joystick-2 exists and is mapped then 2-player games may be possible in MAMEHub under the aforementioned systems.

Here is a pic of Jaku and I playing Spy vs. Spy 2 on the Atari 800 computer system using the Joysticks.

Here is a pic of Jaku and I playing Questprobe #3 on the Atari 800 computer system. This game requires you to flip the floppy disk to load the game fully.

Sept 15, 2011 14:05:39 GMT -5 zambr123 said:

[...] I can't wait to see ZX Spectrum and C64 support in MAMEhub. Will be awesome

Couldn't agree more. C64 may currently be usable but it will need an updated hash file. The current c64.hsi is all public domain stuff. Spectrum is not added as a parameter exception in MAMEHub.py because it does not have a player2 joystick defined.