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boards:plus4 [2015/02/22 21:22]
darron
boards:plus4 [2021/01/04 07:47]
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-==== Commodore plus/4 ==== 
-<wrap right> 
-{{:boards:plus4.jpg?200}} 
-</wrap> 
- 
-The Commodore plus/4 is a home computer from the 1980s and typical with other computers of that era comes with a built-in keyboard and was designed to connect to a television set. 
- 
-The +4 has a number of built in I/O interfaces. These  include a serial UART, 8-bit parallel port, cassette port and a CBM IEC serial bus. 
- 
-The video output can drive composite video inputs on TVs or, for example, a Hauppauge HVR900H capture board in Linux (see photo). This setup has low latency and is very usable in Linux, but this may not be the case elsewhere. 
-=== Pinout === 
- 
-== User port == 
-<code> 
-                   10  11  12 
-GND 5V  RES P2  P3  P4  P5  RxC ATN  9V  9V GND 
- 
-GND P0  RxD RTS DTR P7  DCD P6  P1  DSR TxD GND 
-                       N 
-</code> 
- 
-=== Memory map === 
- 
-^Address ^Device | 
-|$FD10   |User port P0..P7 |