I programmed a new 27C040-100 with the correct data for revision 2. Removing the EPROM from the socket revealed five broken pins! Take. As soon as they finish that, we'll start working on the. Ken Humphries, senior producer of the home versions of the original Primal Rage, said in an early 1996 interview that 'Primal Rage 2 should come out in the arcades in September 1996. By 1995, Atari had begun production of Primal Rage II. I took a closer look at the two MOB ROMs on the main board and noticed a slight problem with one of them: Where did the VCC pin go? Primal Rage II was a versus fighting game developed and released by Atari Games to arcades in 1996. I pondered upon how exactly I would be able to debug the issue further, as the ROM board obscures a large portion of the PCB, limiting probing of the MOB hardware. I didn’t think anything of the 0-0 failure as this checksum fails on a working boardset (the data changed between game revisions and Atari forgot to update the checksum). The game provides a MOB test which checksums each ROM: The MOB processor is built around an Am29C101 16-bit Microprocessor Slice, with microcode provided by bipolar PROMs.Īll of the motion object data is stored in the ROMs on the ROM board, with the exception of two ROMs which store properties for each motion object (e.g. The motion object hardware of the Atari GT hardware is a continuation of the growth/shrink motion object hardware used by games such as Pit Fighter and Space Lords, where run-length encoded graphics data is written into a framebuffer. Unfortunately I had put my own Primal Rage boardset into storage, so I would not be able to resort to swapping parts over (there are quite a few GALs and as we know, GALs can’t be trusted). I was given a Primal Rage boardset to look at, which I was not especially looking forward to given its size and complexity: Junk in my trunk
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