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collapseos/arch/z80/sms/xcomp.fs

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2020-05-15 12:15:31 +10:00
( 8K of onboard RAM )
0xdd00 CONSTANT RS_ADDR
( Memory register at the end of RAM. Must not overwrite )
0xddca CONSTANT PS_ADDR
2020-06-29 09:45:28 +10:00
RS_ADDR 0x80 - CONSTANT SYSVARS
0xc000 CONSTANT HERESTART
0xbf CONSTANT TMS_CTLPORT
0xbe CONSTANT TMS_DATAPORT
SYSVARS 0x70 + CONSTANT GRID_MEM
SYSVARS 0x73 + CONSTANT CPORT_MEM
0x3f CONSTANT CPORT_CTL
0xdc CONSTANT CPORT_D1
0xdd CONSTANT CPORT_D2
SYSVARS 0x74 + CONSTANT PAD_MEM
5 LOAD ( z80 assembler )
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262 LOAD ( xcomp )
524 LOAD ( font compiler )
165 LOAD ( Sega ROM signer )
282 LOAD ( boot.z80.decl )
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270 LOAD ( xcomp overrides )
DI, 0x100 JP, 0x62 ALLOT0 ( 0x66 )
RETN, 0x98 ALLOT0 ( 0x100 )
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( All set, carry on! )
CURRENT @ XCURRENT !
0x100 BIN( !
283 335 LOADR ( boot.z80 )
353 LOAD ( xcomp core low )
2020-05-15 12:15:31 +10:00
CREATE ~FNT CPFNT7x7
470 472 LOADR ( TMS9918 )
602 604 LOADR ( VDP )
402 404 LOADR ( Grid )
625 626 LOADR ( SMS ports )
612 617 LOADR ( PAD )
390 LOAD ( xcomp core high )
2020-05-15 12:15:31 +10:00
(entry) _
( Update LATEST )
PC ORG @ 8 + !
," VDP$ GRID$ PAD$ (im1) " EOT,
ORG @ 0x100 - DUP |M 2 PC! 2 PC!
DUP 1 ( 16K ) segasig
0x4000 + |M 2 PC! 2 PC!