Artist graphics registers (used in HP9000/712)
From Linux PARISC Wiki
Revision as of 18:08, 7 January 2019 by Sven Schnelle (Talk | contribs)
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 | |||
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? | |||
0x380008 | Word | Unknown status register, returning 0x20000000 to make STI happy | 0x380000 | Word | Unknown status register, returning 0 to make STI happy |
0x380008 | Word | Unknown status register, returning 0x20000000 to make STI happy | |||
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 |