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- ( kbd - implement (ps2kc) for SMS PS/2 adapter )
- : (ps2kcA) ( for port A )
- ( Before reading a character, we must first verify that there
- is something to read. When the adapter is finished filling its
- '164 up, it resets the latch, which output's is connected to
- TL. When the '164 is full, TL is low. Port A TL is bit 4 )
- 0xdc PC@ 0x10 AND IF 0 EXIT ( nothing ) THEN
- 0x3f PC@ DROP 0b11011101 ( Port A TH output, low ) 0x3f PC!
- 0xdc PC@ ( bit 3:0 go in 3:0 ) 0x0f AND ( n )
- 0b11111101 ( Port A TH output, high ) 0x3f PC!
- 0xdc PC@ ( bit 3:0 go in 7:4 ) 0x0f AND 4 LSHIFT OR ( n )
- ( Port A/B reset ) 0xff 0x3f PC!
- ;
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