56 lines
1.1 KiB
Plaintext
56 lines
1.1 KiB
Plaintext
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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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; 00-0f - free
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; 10-1f - arguments / return values
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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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; 0400, 0401, 0402 dht status, dht bit, dht_bit_rot
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; 0403 value offset
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; 0405-04a0 rh high/low, temp high/low, checksum
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.include "io_W65C22.h65"
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.include "utility.h65"
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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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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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; RETURN VALUE
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; in a
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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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.endif ; include guard
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