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7d568bd782
Add _TRA!, _THA!, _TRB!, _THB! routines to easily handle those pins' value without stepping on other pins like the drivers previously did. For SDC driver, it's going to be important soon because it turns out that I can't get away with "always on" CS, so I'll need a scheme where it's important that TH/TR pins have stable values.
8 lines
286 B
Plaintext
8 lines
286 B
Plaintext
: _status
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1 _THA! ( output, high/unselected )
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_D1@ 0x3f AND ( low 6 bits are good )
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( Start and A are returned when TH is selected, in bits 5 and
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4. Well get them, left-shift them and integrate them to B. )
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0 _THA! ( output, low/selected )
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_D1@ 0x30 AND 2 LSHIFT OR ;
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