Table of Contents
SAGA registers
Overview
The SAGA Core has dedicated registers
in the following ranges:
DE000x
DFF1Ex
DFF1Fx
DFF3xx
DFF4xx
toDFF7xx
These registers are mainly used by the SAGA Drivers
(RTG and SD drivers) and some other tools.
SAGA-specific registers
Below is the complete SAGA registers list:
Register | Name | Access | Size | Description |
---|---|---|---|---|
DE0000 | saga_sdcard_data | RW | UBYTE | Read and Write Data |
DE0004 | saga_sdcard_ctl | W | UWORD | Write Control |
DE0006 | saga_sdcard_stat | R | UWORD | Read Status |
DE000C | saga_sdcard_clk | W | UBYTE | Clock Speed |
DE0008 | saga_clock_counter | R | ULONG | Read the number of cycles since last call |
DFF1EC | saga_video_planeptr | W | ULONG | Set the SAGA Video FrameBuffer Address |
DFF1F4 | saga_video_mode | W | UWORD | Set the SAGA Video Mode |
DFF1F8 | saga_video_pllw | W | UWORD | Set the SAGA ModeLine PIXELCLOCK |
DFF1FA | saga_video_pllr | R | UWORD | Set the SAGA ModeLine PIXELCLOCK |
DFF300 | saga_video_hpixel | W | UWORD | Set the SAGA ModeLine HPIXEL |
DFF302 | saga_video_hsstrt | W | UWORD | Set the SAGA ModeLine HSSTRT |
DFF304 | saga_video_hsstop | W | UWORD | Set the SAGA ModeLine HSSTOP |
DFF306 | saga_video_htotal | W | UWORD | Set the SAGA ModeLine HTOTAL |
DFF308 | saga_video_vpixel | W | UWORD | Set the SAGA ModeLine VPIXEL |
DFF30A | saga_video_vsstrt | W | UWORD | Set the SAGA ModeLine VSSTRT |
DFF30C | saga_video_vsstop | W | UWORD | Set the SAGA ModeLine VSSTOP |
DFF30E | saga_video_vtotal | W | UWORD | Set the SAGA ModeLine VTOTAL |
DFF310 | saga_video_hvsync | W | UWORD | Set the SAGA ModeLine HVSYNC |
DFF400 | saga_video_clut [0] | W | ULONG | Set the SAGA CLUT8 Color #001 |
DFF7FC | saga_video_clut [255] | W | ULONG | Set the SAGA CLUT8 Color #256 |
DFF1F8 | saga_flash_write | W | UWORD | SPI Flash Write data |
DFF1FA | saga_flash_read | R | UWORD | SPI Flash Read data |
Remarks
Video PLL and SPI Flash are mapped to the same registers.
This Bus is shared between several users. Selection is done by sending a Magic Word.
OCS/ECS/AGA registers
For more information about the original Amiga chipset's registers:
Last modified: le 2020/08/02 12:37