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475caf35f4
... and rename it to KEY?. Then, add KEY from KEY? for its blocking version. I need this for an upcoming Remote Shell feature. If a Collapse OS system remotely controls another shell, it needs to be able to poll both the remote system and the local keyboard at the same time. A blocking KEY is incompatible with this. In some places, the polling mechanism doesn't make sense, so this new KEY? always returns a character. In some places, I just haven't implemented the mechanism yet, so I kept the old blocking code and added a "always 1" flag as a temporary shim. I have probably broken something, but in emulators, Collapse OS runs fine. It's an important reminder of what will be lost with the new "dogfooding" approach (see recent mailing list message): without emulators, it's much harder to to sweeping changes like this without breaking stuff. It's fine, I don't expect many more of these core changes to the system. It's nearly feature-complete.
36 lines
745 B
Forth
36 lines
745 B
Forth
0xff00 CONSTANT RS_ADDR
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0xfffa CONSTANT PS_ADDR
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RS_ADDR 0x80 - CONSTANT SYSVARS
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0 CONSTANT HERESTART
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5 LOAD ( z80 assembler )
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262 LOAD ( xcomp )
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282 LOAD ( boot.z80.decl )
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270 LOAD ( xcomp overrides )
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283 335 LOADR ( boot.z80 )
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353 LOAD ( xcomp core low )
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: (emit) 0 PC! ;
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: (key?) 0 PC@ 1 ;
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: EFS@
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1 3 PC! ( read )
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256 /MOD 3 PC! 3 PC! ( blkid )
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BLK( 256 /MOD 3 PC! 3 PC! ( dest )
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;
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: EFS!
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2 3 PC! ( write )
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256 /MOD 3 PC! 3 PC! ( blkid )
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BLK( 256 /MOD 3 PC! 3 PC! ( dest )
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;
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: COLS 80 ; : LINES 32 ;
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: AT-XY 6 PC! ( y ) 5 PC! ( x ) ;
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390 LOAD ( xcomp core high )
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(entry) _
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( Update LATEST )
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PC ORG @ 8 + !
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," BLK$ "
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," ' EFS@ BLK@* ! "
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," ' EFS! BLK!* ! "
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EOT,
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ORG @ 256 /MOD 2 PC! 2 PC!
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H@ 256 /MOD 2 PC! 2 PC!
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