50 lines
1.1 KiB
Plaintext
50 lines
1.1 KiB
Plaintext
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;********************************************************************************
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; @module IO-W65C22
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; @type utility
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; @device Western Design - W65C22N Versatile Interface Adapter
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; @details
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;********************************************************************************
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.ifndef INCLUDE_IOW65C22
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INCLUDE_IOW65C22 = 1
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; IO-CHIPS OFFSETS FOR PINS FROM BASE ADDRESS
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IO_RB = $0
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IO_RA = $1
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IO_DDRB = $2
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IO_DDRA = $3
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IO_T1CL = $4
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IO_T1CH = $5
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IO_T1LL = $6
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IO_T1LH = $7
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IO_T2CL = $8
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IO_T2CH = $9
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IO_SR = $a
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IO_ACR = $b
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IO_PCR = $c
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IO_IFR = $d
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IO_IER = $e
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IO_RANH = $f ; no handshake
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; TODO: leave?
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.struct VIA_Pins
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RB .byte ; $0
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RA .byte ; $1
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DDRB .byte ; $2
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DDRA .byte ; $3
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T1CL .byte ; $4
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T1CH .byte ; $5
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T1LL .byte ; $6
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T1LH .byte ; $7
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T2CL .byte ; $8
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T2CH .byte ; $9
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SR .byte ; $a
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ACR .byte ; $b
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PCR .byte ; $c
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IFR .byte ; $d
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IER .byte ; $e
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RANH .byte ; $f ; no handshake
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.endstruct
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.endif
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