mirror of
https://github.com/freitz85/AppleIISd.git
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45 lines
1015 B
PHP
45 lines
1015 B
PHP
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;*******************************
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;
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; Apple][Sd Firmware
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; Version 1.0
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;
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; (c) Florian Reitz, 2017
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;
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; X register usually contains SLOT16
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; Y register is used for counting or SLOT
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;
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;*******************************
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; Memory defines
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SLOT16 := $2B ; $s0 -> slot * 16
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SLOT := $3D ; $0s
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CMDLO := $40
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CMDHI := $41
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DCMD := $42 ; Command code
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BUFFER := $44 ; Buffer address
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BLOCK := $46 ; Block number
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R30 := $0478
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R31 := $04F8
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R32 := $0578
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R33 := $05F8
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CURSLOT := $07F8 ; $Cs
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OAPPLE := $C061 ; open apple key
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DATA := $C080
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CTRL := DATA+1
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DIV := DATA+2
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SS := DATA+3
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; Constants
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DUMMY = $FF
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FRX = $10 ; CTRL register
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ECE = $04
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SS0 = $01 ; SS register
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SDHC = $10
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WP = $20
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CD = $40
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INITED = $80
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