2023-12-08 22:56:35 +01:00
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;********************************************************************************
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; @module system
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; @type header
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; @details
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; Variable definitions for the current hardware setup
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;********************************************************************************
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.ifndef INCLUDE_SYSTEM
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INCLUDE_SYSTEM = 1
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; reserved RAM addresses
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2023-12-27 16:55:56 +01:00
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; 00-0f - free use (Z0-Z15)
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; 10-1f - arguments / return values (ARG0-ARG15)
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2023-12-08 22:56:35 +01:00
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; 20-ff - free
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; 0100 - 01FF Stack
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; 0200,0201 keybuffer write/read pointer
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; 0202-02ff keybuffer
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; 0300 lcd character counter
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2023-12-27 16:55:56 +01:00
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2023-12-08 22:56:35 +01:00
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.include "io_W65C22.h65"
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.include "utility.h65"
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2023-12-27 16:55:56 +01:00
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.importzp Z0,Z1,Z2,Z3,Z4,Z5,Z6,Z7,Z8,Z9,Z10,Z11,Z12,Z13,Z14,Z15
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.importzp ARG0,ARG1,ARG2,ARG3,ARG4,ARG5,ARG6,ARG7,ARG8,ARG9,ARG10,ARG11,ARG12,ARG13,ARG14,ARG15
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2023-12-08 22:56:35 +01:00
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2023-12-27 16:55:56 +01:00
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; Z0 = $0
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; Z1 = $1
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; Z2 = $2
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; Z3 = $3
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; Z4 = $4
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; Z5 = $5
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; Z6 = $6
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; Z7 = $7
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; Z8 = $8
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; Z9 = $9
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; Z10 = $a
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; Z11 = $b
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; Z12 = $c
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; Z13 = $d
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; Z14 = $e
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; Z15 = $f
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; ; ARGUMENTS
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; ; a,x,y can also be used
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; ARG0 = $10
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; ARG1 = $11
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; ARG2 = $12
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; ARG3 = $13
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; ARG4 = $14
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; ARG5 = $15
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; ARG6 = $16
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; ARG7 = $17
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; ARG8 = $18
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; ARG9 = $19
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; ARG10 = $1a
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; ARG11 = $1b
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; ARG12 = $1c
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; ARG13 = $1d
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; ARG14 = $1e
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; ARG15 = $1f
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2023-12-08 22:56:35 +01:00
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; RETURN VALUE
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.segment "VIA1"
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; IO1: .res 16
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IO1 = $6000
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.segment "VIA2"
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; IO2: .res 16
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IO2 = $7000
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2023-12-31 01:59:06 +01:00
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; charmappings for the lcd
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; .charmap 'ü', $F5
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; .charmap 'Ü', $F5
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; .charmap 'ö', $EF
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; .charmap 'Ö', $EF
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; .charmap 'ä', $E1
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; .charmap 'Ä', $E1
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; .charmap 'ß', $E2
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2023-12-08 22:56:35 +01:00
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.endif ; include guard
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