Artist graphics registers (used in HP9000/712)
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− | Artist is the onboard graphics chip used in the HP9000/712. According to HP, it's mostly compatible to CRX. On the 712, it spans the I/O memory range 0xf4000000-0xf5ffffff. | + | Artist is the onboard graphics chip used in the HP9000/712. According to HP, it's mostly compatible to CRX. On the 712, it spans the I/O memory range 0xf4000000-0xf5ffffff. Unfortunately no documentation seems to be available, but this is what i figured out by looking at the memory write from the Bootrom/STI code: |
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Revision as of 18:06, 7 January 2019
Artist is the onboard graphics chip used in the HP9000/712. According to HP, it's mostly compatible to CRX. On the 712, it spans the I/O memory range 0xf4000000-0xf5ffffff. Unfortunately no documentation seems to be available, but this is what i figured out by looking at the memory write from the Bootrom/STI code:
Offset | Size | Description |
0x380000 | Word | Unknown status register |
0x1004a0 | Word | VRAM offset (starting address) for write FIFO registers |
0x100800 | Word | Block mover source X=Bit31-16 Y=Bit15-0 |
0x100a04 | Word | Block mover size Width=Bit31-16 Height=Bit15-0 |
0x100600 | Word | Bit mode VRAM write FIFO |
0x100620 | Word | Byte mode VRAM write FIFO |
0x118010 | Word | foreground color used in block move operations |
0x118014 | Word | background color used in block move operations |
0x30023c | Word | Used in selftest code, looks like signature testing result register? |
0x0118406c-0x011847ff | Word | Color map used by STI code - Strange offset address, maybe software configurable? One entry spans 32 bit, where Bit 23-16=R, Bit16-8=G, Bit7-0=B |