Difference between revisions of "Port"
| Line 13: | Line 13: | ||
<br> | <br> | ||
== Port 1 == | == Port 1 == | ||
| − | 0 <br> | + | 0 Right controller right<br> |
| − | 1 <br> | + | 1 Right controller left<br> |
| − | 2 <br> | + | 2 Right controller back<br> |
| − | 3 <br> | + | 3 Right controller forward<br> |
| − | 4 <br> | + | 4 Right controller counter clockwise<br> |
| − | 5 <br> | + | 5 Right controller clockwise<br> |
| − | 6 <br> | + | 6 Right controller pull<br> |
| − | 7 <br> | + | 7 Right controller push<br> |
<br> | <br> | ||
| + | |||
| + | Two bits have a second function: | ||
| + | |||
| + | 6 Write Data0, Enable write on VRAM ODD0 and EVEN0 | ||
| + | 7 Write Data1, Enable write on VRAM ODD1 and EVEN1 | ||
| + | |||
| + | |||
== Port 4 == | == Port 4 == | ||
| Line 29: | Line 36: | ||
0 Left controller right<br> | 0 Left controller right<br> | ||
1 Left controller left<br> | 1 Left controller left<br> | ||
| − | 2 Left controller | + | 2 Left controller back<br> |
3 Left controller forward<br> | 3 Left controller forward<br> | ||
4 Left controller counter clockwise<br> | 4 Left controller counter clockwise<br> | ||
Revision as of 21:01, 17 November 2012
The VES has four usable 8-bit data ports in the console, port 0 and 1 that are in the 3850 CPU and port 4 and 5 on one of the 3851 Program Storage Units. These I/O:s are hooked to specific functions as shown in the table below.
Port 0
0 TIME console button
1 MODE console button
2 HOLD console button
3 START console button
4 - not connected -
5 ARM (sound/graphics)
6 Enable in-signal from controllers
7 - not connected -
Port 1
0 Right controller right
1 Right controller left
2 Right controller back
3 Right controller forward
4 Right controller counter clockwise
5 Right controller clockwise
6 Right controller pull
7 Right controller push
Two bits have a second function:
6 Write Data0, Enable write on VRAM ODD0 and EVEN0 7 Write Data1, Enable write on VRAM ODD1 and EVEN1
Port 4
Port 4 has double duties and serve left controller as well as horizontal video position.
0 Left controller right
1 Left controller left
2 Left controller back
3 Left controller forward
4 Left controller counter clockwise
5 Left controller clockwise
6 Left controller pull
7 Left controller push
Also:
0 Video Select
1 Video Horizontal A
2 Video Horizontal B
3 Video Horizontal C
4 Video Horizontal D
5 Video Horizontal E
6 Video Horizontal F
7
Port 5
0 Video Vertical A
1 Video Vertical B
2 Video Vertical C
3 Video Vertical D
4 Video Vertical E
5 Video Vertical F
6 Tone AN (beep sound)
7 Tone BN (beep sound)
