Difference between revisions of "Kempston Joystick"
From SpecNext official Wiki
(Adding bits info for Kempston/MD joystick reading) |
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| Line 7: | Line 7: | ||
|PortMask=%---- ---- 0001 1111 | |PortMask=%---- ---- 0001 1111 | ||
}} | }} | ||
| + | {| class="wikitable" | ||
| + | !rowspan="2"| Bit !!colspan="2"| Function | ||
| + | |- | ||
| + | ! Kempston joystick !! MD controller | ||
| + | |- | ||
| + | | 7 || 0 || start/mode buttons | ||
| + | |- | ||
| + | | 6 || 0 || A/X buttons | ||
| + | |- | ||
| + | | 5 || Fire 2 || B/Y buttons | ||
| + | |- | ||
| + | | 4 || Fire 1 || C/Z buttons | ||
| + | |- | ||
| + | | 3 ||colspan="2"| up | ||
| + | |- | ||
| + | | 2 ||colspan="2"| down | ||
| + | |- | ||
| + | | 1 ||colspan="2"| left | ||
| + | |- | ||
| + | | 0 ||colspan="2"| right | ||
| + | |} | ||
| + | For all bits 0 = not pressed / 1 = pressed | ||
Revision as of 21:15, 5 February 2020
| Number | $xx1F |
|---|---|
| Decimal | |
| Short desc. | Reads movement of joysticks using Kempston interface. |
| Bit Mask | %---- ---- 0001 1111 |
| Readable | Yes |
| Writable | No |
| Subsystem | Input |
| Bit | Function | |
|---|---|---|
| Kempston joystick | MD controller | |
| 7 | 0 | start/mode buttons |
| 6 | 0 | A/X buttons |
| 5 | Fire 2 | B/Y buttons |
| 4 | Fire 1 | C/Z buttons |
| 3 | up | |
| 2 | down | |
| 1 | left | |
| 0 | right | |
For all bits 0 = not pressed / 1 = pressed