79 lines
1.4 KiB
Plaintext
79 lines
1.4 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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; 0301 - 0341 message to print
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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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TO_PRINT = $300
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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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.include "io_W65C22.asm6502"
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.include "utility.asm6502"
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; RETURN VALUE
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; in a
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IO1 = $6000
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IO2 = $7000
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; struct method
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.org $6000
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VIA1: .tag VIA_Pins
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.org $7000
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VIA2: .tag VIA_Pins
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; IO-1
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PB1 = $6000
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PA1 = $6001
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DDRB1 = $6002
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DDRA1 = $6003
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T1L1 = $6004
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T1H1 = $6005
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; IO-2
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PB2 = $7000
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PA2 = $7001
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DDRB2 = $7002
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DDRA2 = $7003
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T1L2 = $7004
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T1H2 = $7005
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ACR2 = $700b
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PCR2 = $700c
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IFR2 = $700d
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IER2 = $700e
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.endif ; include guard
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