Recent content by srg320

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    Saturn SCU DSP Notes

    Perhaps interrupts have not been disabled for the Slave SH2. The Slave SH2 interrupts are described in "Sega Saturn technical bulettin #28".
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    A-Bus CS2

    I found an interesting thing about the A-Bus CS2. The bios uses different addresses to read 16 and 32 bits data from the CD block: 0x25898000 and 0x25818000 respectively. The bios reads File Info and TOC data in words from 0x25898000, and sector data in long words from 0x25818000. When address...
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    Saturn CD Block ROM dumped again.

    I partially disassembled CDB105 for the purpose of development and debugging the Saturn FPGA core. Maybe it will be useful to someone. https://github.com/srg320/Saturn_hw/tree/main/CDB
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