Changes
8255
,* I/O Mode 0,
* Input
{|{{Prettytable|width: 700px; font-size: 2em;}}
|''Bit''||''Description''||''Usage''
|-
|7||Cassette read dataR||
|-
|6||Parallel/Printer port ready signal||"1" = not ready, "0" = Ready
|-
|5||/EXP||(note 6)
|-
|4||(note 5)||
|-
|3||(note 1)||(note 4)
|-
|2||(note 2)||
|-
|1||(note 3)||
|-
|0||6845 VSYNC||State of VSYNC from 6845. "1" = VSYNC active, "0" = VSYNC inactive
|-
|}
==== Note ====
PSG function selection:
{|{{Prettytable|width: 700px; font-size: 2em;}}
