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Fatal error: fpgen_rm_reg: unimplemented opmode 1F at 408EF7D8 #8109

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unassumingbadger opened this issue May 28, 2021 · 4 comments
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Fatal error: fpgen_rm_reg: unimplemented opmode 1F at 408EF7D8 #8109

unassumingbadger opened this issue May 28, 2021 · 4 comments
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CPU opcodes execution and/or timing

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@unassumingbadger
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unassumingbadger commented May 28, 2021 •
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MAME: 0.232
ROM: maclc3
Mac OS 7.6.1
Software: Photoshop 3.0

Executing Photoshop 3.0 crashes MAME 0.232 every time.

MAME0.232_maclc3_photoshop3.txt

Photoshop 2.0 has the same status as 3.0 and with any 68030 Mac.
@angelosa angelosa added the CPU opcodes execution and/or timing label Jun 2, 2021
@angelosa
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angelosa commented Jun 2, 2021

Missing FGETMAN (Floating point GET MANtissa) opcode emulation from 68k FPU

@unassumingbadger
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Just for fun, I tried loading Strata 1.1. I knew there would be an FPU error, but its a new one this time.
fpgen_rm_reg: unimplemented opmode 31 at 01BC8DE0

You guys are killing me with nostalgia here.

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angelosa commented Jun 7, 2021

That's FSINCOS opcode (simultaneous SINe and COSine).

rb6502 added a commit that referenced this issue Jun 8, 2021
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m68kfpu: implement FGETMAN and FSINCOS. Photoshop 3.0 starts & loads …
60c3d14 
…pictures now. (GitHub #8109) [R. Belmont]
@rb6502
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rb6502 commented Jun 8, 2021

With latest, Photoshop 3.0 now starts up and can load pictures. https://forums.bannister.org/ubbthreads.php?ubb=showflat&Number=119340#Post119340

@rb6502 rb6502 closed this as completed Jun 8, 2021
@tcamargo tcamargo mentioned this issue Aug 24, 2021
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@angelosa @rb6502 @unassumingbadger