Tt Video Subsystem
8400 RW ----rrrR gggG bbbB TT Palette RegO 8402 RW ----rrrR gggG bbbB TT Palette Regl 85FE RW ----rrrR gggG bbbB TT Palette Reg255 8604 RW -------- xxxx xxxx Disk Data Path WDC 8606 RO -------- -----xxx DMA Status 8606 WO -------x xxxx xxxx DMA Mode CWDL 8608 RW -------- xxxx xxxx DMA Pointer High 860A RW -------- xxxx xxxx DMA Pointer Mid ooOC RW ----- xxxx xxxO DMA Pointer Low 8700 RW -------- xxxx xxxx DMA Pointer Upper 8702 RW -------- xxxx xxxx DMA Pointer Upper-Middle 8704 RW --------...