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https://github.com/hsoft/collapseos.git
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ca60685067
Instead of letting each configuration taking care of RDLN$ and "CollapseOS" prompt, move this to BOOT to simplify xcomp units. Initialization source code is now only for driver initialization.
74 lines
1.7 KiB
Forth
74 lines
1.7 KiB
Forth
0x8000 CONSTANT RAMSTART
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0xbf00 CONSTANT RS_ADDR
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0xbffa CONSTANT PS_ADDR
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RAMSTART 0x70 + CONSTANT LCD_MEM
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RAMSTART 0x72 + CONSTANT KBD_MEM
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0x01 CONSTANT KBD_PORT
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212 LOAD ( z80 assembler )
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: ZFILL, ( u ) 0 DO 0 A, LOOP ;
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262 LOAD ( xcomp )
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522 LOAD ( font compiler )
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270 LOAD ( xcomp overrides )
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( TI-84+ requires specific code at specific offsets which
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come in conflict with Collapse OS' stable ABI. We thus
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offset the binary by 0x100, which is our minimum possible
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increment and fill the TI stuff with the code below. )
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0x5a JPnn, 0x15 ZFILL, ( 0x18 )
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0x5a JPnn, ( reboot ) 0x1d ZFILL, ( 0x38 )
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( handleInterrupt )
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DI,
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AF PUSHqq,
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( did we push the ON button? )
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0x04 ( PORT_INT_TRIG ) INAn,
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0 ( INT_TRIG_ON ) A BITbr,
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IFNZ,
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( yes? acknowledge and boot )
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0x03 ( PORT_INT_MASK ) INAn,
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0x00 ( INT_MASK_ON ) A RESbr, ( ack interrupt )
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0x03 ( PORT_INT_MASK ) OUTnA,
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AF POPqq,
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EI,
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0x100 JPnn,
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THEN,
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AF POPqq,
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EI,
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RETI,
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0x03 ZFILL, ( 0x53 )
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0x5a JPnn, ( 0x56 ) 0xff A, 0xa5 A, 0xff A, ( 0x5a )
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( boot )
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DI,
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(im1)
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( enable the ON key interrupt )
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0x03 ( PORT_INT_MASK ) INAn,
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0x00 ( INT_MASK_ON ) A SETbr,
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0x03 ( PORT_INT_MASK ) OUTnA,
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A 0x80 LDrn,
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0x07 ( PORT_BANKB ) OUTnA,
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EI,
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( LCD off )
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A 0x02 ( LCD_CMD_DISABLE ) LDrn,
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0x10 ( LCD_PORT_CMD ) OUTnA,
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HALT,
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0x95 ZFILL, ( 0x100 )
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( All set, carry on! )
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CURRENT @ XCURRENT !
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0x100 BIN( !
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282 LOAD ( boot.z80 )
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393 LOAD ( xcomp core low )
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CREATE ~FNT CPFNT3x5
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555 560 LOADR ( LCD low )
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566 570 LOADR ( KBD low )
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420 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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," LCD$ KBD$ " EOT,
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ORG @ 0x100 - 256 /MOD 2 PC! 2 PC!
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H@ 256 /MOD 2 PC! 2 PC!
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