Difference between revisions of "Geneve CRU definitions"
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(Created page with "''/signal'' means negative logic {| |- | style="border: 1px solid black; padding:0.2ex" | TMS 9901 |- | style="border: 1px solid black; padding:0.2ex" | 0002 | style="border: 1p...") |
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''/signal'' means negative logic | ''/signal'' means negative logic | ||
{| | {| style="width:50%" | ||
|- | |- | ||
| style=" | | colspan="2" style="background-color:lightgray; text-align:center" | TMS 9901 | ||
|- | |- | ||
| style=" | | style="width:20%" | 0002 | ||
| INTA | |||
|- | |- | ||
| 0004 | |||
| VDP Interrupt | |||
|- | |||
| 0006 | |||
| Joystick (button?) | |||
|- | |||
| 0008 | |||
| Joystick left | |||
|- | |||
| 000a | |||
| Joystick right | |||
|- | |||
| 000c | |||
| Joystick down | |||
|- | |||
| 000e | |||
| Joystick up | |||
|- | |||
| 0010 | |||
| Keyboard Interrupt | |||
|- | |||
| 0018 | |||
| INTB | |||
|- | |||
| 001a | |||
| Real-Time clock interrupt | |||
|- | |||
| 0024 | |||
| Joystick select | |||
|- | |||
| 002c | |||
| Keyboard reset | |||
|- | |||
| 002e | |||
| /VDP wait states | |||
|- | |||
| 0030 | |||
| P-Box reset | |||
|- | |||
| 0032 | |||
| System clock speed | |||
|- | |||
| 0034 | |||
| P-Box pin 18 sense (declared as not used) | |||
|- | |||
| 0036 | |||
| External memory cycle select | |||
|- | |||
| 0038 | |||
| Mouse button 3 | |||
|- | |||
| 003a | |||
| VDP reset | |||
|- | |||
|} | |} | ||
{| style="width:50%; margin-top:3ex" | |||
{ | |- | ||
| colspan="2" style="background-color:lightgray; text-align:center" | Special | |||
|- | |||
| style="width:20%" | 13c0-13fe | |||
| Single step | |||
|- | |||
|} | |||
{| style="width:50%; margin-top:3ex" | |||
|- | |||
TMS9995 | | colspan="2" style="background-color:lightgray; text-align:center" | TMS9995 | ||
1ee0 | |- | ||
1ee2 | | style="width:20%" | 1ee0 | ||
1ee4 Interrupt level 1 latch | | Decrementer in event counter mode (0=in timer mode) | ||
|- | |||
| 1ee2 | |||
| Enable decrementer | |||
|- | |||
1ef0 Keyboard clock enable | | 1ee4 | ||
1ef2 Clear keyboard input | | Interrupt level 1 latch | ||
1ef4 Geneve mode | |- | ||
1ef6 / | | 1ee6 | ||
1ef8 Cartridge size (1= | | Interrupt level 2 latch | ||
1efa /Protect 6000 | |- | ||
1efc /Protect 7000 | | 1ee8 | ||
1efe /Add wait state per memory cycle | | Interrupt level 4 latch | ||
|- | |||
| 1eea-1eee | |||
| not used | |||
|- | |||
| 1ef0 | |||
| Keyboard clock enable | |||
|- | |||
| 1ef2 | |||
| Clear keyboard input register | |||
|- | |||
| 1ef4 | |||
| Geneve mode (/TI mode) | |||
|- | |||
| 1ef6 | |||
| Direct mode (/Mapper mode) | |||
|- | |||
| 1ef8 | |||
| Cartridge rom size (1=8 KiB, 0=16 Kib) | |||
|- | |||
| 1efa | |||
| /Protect 6000 | |||
|- | |||
| 1efc | |||
| /Protect 7000 | |||
|- | |||
| 1efe | |||
| /Add wait state per memory cycle | |||
|- | |||
| 1fda | |||
| Macro Instruction Detect | |||
|} | |||
The MID flag is set whenever the CPU encounters an unknown opcode. This (together with the interrupt) may be used to implement new "commands" on the application level. | |||
Revision as of 10:57, 30 October 2010
/signal means negative logic
| TMS 9901 | |
| 0002 | INTA |
| 0004 | VDP Interrupt |
| 0006 | Joystick (button?) |
| 0008 | Joystick left |
| 000a | Joystick right |
| 000c | Joystick down |
| 000e | Joystick up |
| 0010 | Keyboard Interrupt |
| 0018 | INTB |
| 001a | Real-Time clock interrupt |
| 0024 | Joystick select |
| 002c | Keyboard reset |
| 002e | /VDP wait states |
| 0030 | P-Box reset |
| 0032 | System clock speed |
| 0034 | P-Box pin 18 sense (declared as not used) |
| 0036 | External memory cycle select |
| 0038 | Mouse button 3 |
| 003a | VDP reset |
| Special | |
| 13c0-13fe | Single step |
| TMS9995 | |
| 1ee0 | Decrementer in event counter mode (0=in timer mode) |
| 1ee2 | Enable decrementer |
| 1ee4 | Interrupt level 1 latch |
| 1ee6 | Interrupt level 2 latch |
| 1ee8 | Interrupt level 4 latch |
| 1eea-1eee | not used |
| 1ef0 | Keyboard clock enable |
| 1ef2 | Clear keyboard input register |
| 1ef4 | Geneve mode (/TI mode) |
| 1ef6 | Direct mode (/Mapper mode) |
| 1ef8 | Cartridge rom size (1=8 KiB, 0=16 Kib) |
| 1efa | /Protect 6000 |
| 1efc | /Protect 7000 |
| 1efe | /Add wait state per memory cycle |
| 1fda | Macro Instruction Detect |
The MID flag is set whenever the CPU encounters an unknown opcode. This (together with the interrupt) may be used to implement new "commands" on the application level.