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PDS development system

5 bytes removed, 10:59, 12 April 2010
/* Technical */
Uses port FBEC-FBEF.

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 * FBEC is used to transfer 8-bit PDS [[Z80 PIO]] Port A Data (8bit data.*FBED input is used to signal data is ready for CPC to read/from PC)* FBED output is used PDS [[Z80 PIO]] Port B Data (handshake to signal back to host that data has been received./from PC)* FBEE,PDS [[Z80 PIO]] Port A Control FBEF purpose unknown (?)PDS [[Z80 PIO]] Port B Control
The '''CPC interface''' connects to Expansion Port, and contains a [[Z80 PIO]] chip, and 74LS245, 74LS04, 74LS32 logic chips, and a Reset button. And a 2x8pin connector, for connecting to PC via 16pin flat-cable.
Disassembling games (see list below), gives confliction port addresses (unclear which are correct, might be also an older or newer PDS hardware version),
* FBEC - configuration unknown (maybe configuration, or maybe REQUEST to PC)* FBED - data to PC (used in Last V8)* FBEE - bit0 = CLK signal from PC* FBEF - data from PC
== CPC Games that contain PDS code ==
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6,388
edits
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