Baffavision TMS9918 Videoboard
Settings
Colecovision Port: B0h-BFh (mirrored at A0h-AFh)Msx Port : 98h-9Bh
| JP1 | ||
|---|---|---|
| =o | 02h-07h (A1|A2) | -----00- |
| o= | -----xx- | |
| JP2 | ||
| =o | 08h (A3) | ----1--- |
| o= | ----x--- | |
| J6 | ||
| |88 | ---x---- | |
| 8|8 | (A4) | ---0---- |
| 88| | 10h (A4) | ---1---- |
| J4 | ||
| |8888888 | 0h | 000xxxxx |
| 8|888888 | 20h | 001xxxxx |
| 88|88888 | 40h | 010xxxxx |
| 888|8888 | 60h | 011xxxxx |
| 8888|888 | 80h | 100xxxxx |
| 88888|88 | A0h | 101xxxxx |
| 888888|8 | C0h | 110xxxxx |
| 8888888| | E0h | 111xxxxx |
| JP4 | ||
| =o | int | |
| o= | nmi | |
| JP7 (Ext) | ||
|---|---|---|
| pin1 | BUSCLK | |
| pin2 | CPUCLK | |
| pin3 | GROMCLK | |
| pin4 | EXTVDP | |
| pin5 | GND | |
Colecovision
VDP I/O Ports
Port BE-BF are used by the internal VDP TMS9918aInternal VDP
Port BE VRAM Data (Read/Write)
Port BF VDP Status Registers (Read Only)
Port BF 2nd Byte b7=0: VRAM Address setup (Write Only)
Port BF 2nd Byte b7=1: VDP Register write (Write Only)
Port BF VDP Status Registers (Read Only)
Port BF 2nd Byte b7=0: VRAM Address setup (Write Only)
Port BF 2nd Byte b7=1: VDP Register write (Write Only)
Ports: A0-BF
| JP1 | -----xx- | o= |
| JP2 | ----x--- | o= |
| J6 | ---x---- | |88 |
| J4 | 88888|88 | 101xxxxx A0h |
| JP4 | o= | nmi |
MSX
Port: 98h & !M1| JP1 | -----xx- | o= |
| JP2 | ----1--- | =o (A3) 8h |
| J6 | ---1---- | 88| (A4) 10h |
| J4 | 8888|888 | 100xxxxx 80h |
| JP4 | =o | int |
ColecoVision Related Boards:
MSX Related Boards:
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