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7/26/2025, 9:10:28 PM
>>716512283
>>716499296
someone on Twatter posted disassembled pics of it. It's basically a Sophia devkit (same boards inside) attached to a Hitachi 7604 debugger. It doesn't have an ICE, it's just has a bunch of FPGAs to monitor invalid memory accesses and communicate to a PC via SCSI port to log them (or maybe debug them, I don't remember).
>>716502323
Some hardware parts you are not expected to use, because they are not mapped up by design, and nobody knows what the fuck may happen if you try to do it. They may work, they may return random garbage, they may work on a devkit but not on a retail console, they may break on a later die shrink of the console.
For ex. Commodore 128 was meant to be 100% backwards compatible with the Commodore 64, but coders started reverse engineering the invalid opcodes on the 64 and found that some of them were semi-stable, and you could save some processing by using them. These commands were not meant to exist, they were there because of manufacturing snafus. So when they made the C128 based on the original specs, they did not have any invalid opcodes, and the games using them ended up incompatible.
>>716499296
someone on Twatter posted disassembled pics of it. It's basically a Sophia devkit (same boards inside) attached to a Hitachi 7604 debugger. It doesn't have an ICE, it's just has a bunch of FPGAs to monitor invalid memory accesses and communicate to a PC via SCSI port to log them (or maybe debug them, I don't remember).
>>716502323
Some hardware parts you are not expected to use, because they are not mapped up by design, and nobody knows what the fuck may happen if you try to do it. They may work, they may return random garbage, they may work on a devkit but not on a retail console, they may break on a later die shrink of the console.
For ex. Commodore 128 was meant to be 100% backwards compatible with the Commodore 64, but coders started reverse engineering the invalid opcodes on the 64 and found that some of them were semi-stable, and you could save some processing by using them. These commands were not meant to exist, they were there because of manufacturing snafus. So when they made the C128 based on the original specs, they did not have any invalid opcodes, and the games using them ended up incompatible.
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