collapseos/blk/020
Virgil Dupras 91f79d1131 Move z80a from B200 to B5
The idea is to consider assemblers as "runtime" apps instead of
placing them in the "bootstrap" section of the blocks. These apps
will be used for much more than bootstrapping.

Moved its documentation to doc/asm.txt and made its code blocks
more compact.
2020-09-21 17:51:08 -04:00

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( cell contains both bytes. MSB is spit as-is, LSB is ORed
with r )
( r -- )
: OP2r
CREATE ,
DOES>
@ SPLITB SWAP ( r lsb msb )
A, ( r lsb )
SWAP <<3 ( lsb r<<3 )
OR A,
;
0xed41 OP2r OUT(C)r,
0xed40 OP2r INr(C),