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boards:plus4 [2015/02/22 21:10]
darron 		boards:plus4 [2021/01/04 07:47] (current)
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 </wrap> </wrap>
  
-The Commodore is a home computer from the 1980s. It has a number of interfaces which can be used to interface with the outside world which include a serial UART, 8-bit parallel port, cassette port and CBM IEC serial bus.+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 (2040:6600) capture board in Linux (see photo). This set up has low latency and is very usable in Linux, but this may not be the case elsewhere.
 === Pinout === === Pinout ===
  
 == User port == == User port ==
 <code> <code>
- 1    2    3    4    5    6    7    8    9    10   11   12 + 1   2   3   4   5   6   7   8   9   10  11  12 
-GND  5V   RES  P2   P3   P4   P5   RxC  ATN  9VAC 9VAC GND+GND 5V  RES *P2 P3  P4  P5  RxC ATN  9V  9V GND
  
-GND  P0   RxD  RTS  DTR  P7   DCD  P6   P1   DSR  TxD  GND +GND P0  RxD RTS DTR P7  DCD P6  P1  DSR TxD GND 
- A    B    C    D    E    F    H    J    K    L    M    N+ A   B   C   D   E   F   H   J   K   L   M   N 
 + 
 +*CST SENSE
 </code> </code>
 +
 +=== Memory map ===
 +
 +^Address ^Device ^Function |
 +|$FD10   |MOS 6529B  | User port P0..P7 |
 +
 +=== Resources ===
 +
 +[[https://wiki.kewl.org/downloads/TED_7360R0_Preliminary_Data_Sheet.pdf|TED data sheet]]
 +
 +[[https://wiki.kewl.org/downloads/TED_System_Hardware_Manual.pdf|Hardware manual]]