| R/W | ADR | HEXADR | NAME | DESCRIPTION | OS |
|---|---|---|---|---|---|
| write | 53277 | $D01D | GRACTL | controls PM and Triggers | both |
This is a write only register.
| Bit | Function |
|---|---|
| 7 | unused |
| 6 | unused |
| 5 | unused |
| 4 | unused |
| 3 | unused |
| 2 | Latch Triggers when =1 |
| 1 | Turn on players when =1 |
| 0 | Turn on missiles when =1 |
Bit 0 and Bit 1 control players and missiles. They are visible only when the respective bit is set to 1. Don't forget to set SDMCTL also.
"Latch Triggers" means that triggers of sticks and paddles stay in "pressed state" once pressed. To reset this, set Bit 2 to 0. This is valid for all triggers and cannot be set for single triggers only.
see also: Player Missile Topics
previous: VDELAY
next: HITCLR
