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Recipes contain bits and pieces of hardware-related knowledge, but these bits feel sparse. I've been wanting to consolidate hardware- related documentation for a while, but always fell at odds with the recipes organisation. We don't have recipes anymore, just a /doc/hw section that contains hardware-related documentation which often translate to precise instructions to run Collapse OS on a specific machine. With this new organisation, I hope to end up with a better, more solid documentation.
12 lines
486 B
Plaintext
12 lines
486 B
Plaintext
: (ps2kcB) ( for port B )
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( Port B TL is bit 2 )
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0xdd PC@ 0x04 AND IF 0 EXIT ( nothing ) THEN
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0x3f PC@ DROP 0b01110111 ( Port B TH output, low ) 0x3f PC!
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0xdc PC@ ( bit 7:6 go in 1:0 ) 6 RSHIFT ( n )
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0xdd PC@ ( bit 1:0 go in 3:2 ) 0x03 AND 2 LSHIFT OR ( n )
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0b11110111 ( Port B TH output, high ) 0x3f PC!
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0xdc PC@ ( bit 7:6 go in 5:4 ) 0xc0 AND 2 RSHIFT OR ( n )
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0xdd PC@ ( bit 1:0 go in 7:6 ) 0x03 AND 6 LSHIFT OR ( n )
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( Port A/B reset ) 0xff 0x3f PC!
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;
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