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182 lines
3.8 KiB
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182 lines
3.8 KiB
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<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"/><link rel="stylesheet" type="text/css" href="ca65-doc-style.css"/></head><body><a href="ref_index.html"><h1>ip65 technical reference</h1></a><h1>File : test/test_getc.s</h1><h2 id="variables">variables</h2><table><tr><th>variable</th><th>description</th><th>size (bytes)</th></tr><tr><td id="output_buffer">output_buffer</td><td></td><td></td></tr></table><h2>implementation</h2><pre id="code">
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.ifndef KIPPER_API_VERSION_NUMBER
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.define EQU =
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.include "../inc/kipper_constants.i"
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.endif
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.include "../inc/common.i"
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.include "../inc/commonprint.i"
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.import print_a
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.import cfg_get_configuration_ptr
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.import io_device_no
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.import io_sector_no
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.import io_track_no
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.import io_read_sector
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.import io_write_sector
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.import io_read_file_with_callback
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.import io_read_file
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.import io_filename
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.import io_filesize
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.import io_load_address
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.import io_callback
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.import get_key
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.import ip65_error
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.import ip65_process
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.import io_read_catalogue_ex
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.macro cout arg
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lda arg
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jsr print_a
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.endmacro
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.bss
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sector_buffer: .res 256
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output_buffer: .res 520
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.export output_buffer
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current_byte_in_row: .res 1
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current_byte_in_sector: .res 1
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start_of_current_row: .res 1
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directory_buffer: .res 4096
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.segment "STARTUP" ;this is what gets put at the start of the file on the C64
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.word basicstub ; load address
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basicstub:
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.word @nextline
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.word 2003
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.byte $9e
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.byte <(((init / 1000) .mod 10) + $30)
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.byte <(((init / 100 ) .mod 10) + $30)
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.byte <(((init / 10 ) .mod 10) + $30)
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.byte <(((init ) .mod 10) + $30)
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.byte 0
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@nextline:
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.word 0
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init:
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lda #14
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jsr print_a ;switch to lower case
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lda $dc08 ;read deci-seconds - start clock ticking
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sta $dc08
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jsr load_buffer
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@loop:
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lda #5 ;timeout period
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jsr getc
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bcs @done
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jsr print_a
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jmp @loop
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@done:
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rts
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load_buffer:
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ldax #buffer
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stax next_char_ptr
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ldax #buffer_length
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stax buff_length
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rts
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getc:
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sta getc_timeout_seconds
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clc
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lda $dc09 ;time of day clock: seconds (in BCD)
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sed
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adc getc_timeout_seconds
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cmp #$60
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bcc @timeout_set
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sec
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sbc #$60
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@timeout_set:
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cld
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sta getc_timeout_end
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@poll_loop:
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jsr ip65_process
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jsr next_char
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bcs @no_char
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rts ;done!
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@no_char:
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lda $dc09 ;time of day clock: seconds
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cmp getc_timeout_end
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bne @poll_loop
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sec
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rts
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next_char:
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lda buff_length
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bne @not_eof
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lda buff_length+1
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bne @not_eof
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sec
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rts
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@not_eof:
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next_char_ptr=*+1
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lda $ffff
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pha
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inc next_char_ptr
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bne :+
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inc next_char_ptr+1
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:
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sec
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lda buff_length
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sbc #1
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sta buff_length
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lda buff_length+1
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sbc #0
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sta buff_length+1
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pla
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clc
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rts
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.rodata
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buffer:
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.byte "this is a test1!",13
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.byte "this is a test2!",13
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.byte "this is a test3!",13
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.byte "this is a test4!",13
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.byte "this is a test5!",13
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.byte "this is a test6!",13
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.byte "this is a test7!",13
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.byte "this is a test8!",13
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.byte "this is a test9!",13
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.byte "this is a test10!",13
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.byte "this is a test1@",13
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.byte "this is a test2@",13
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.byte "this is a test3@",13
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.byte "this is a test4@",13
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.byte "this is a test5@",13
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.byte "this is a test6@",13
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.byte "this is a test7@",13
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.byte "this is a test8@",13
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.byte "this is a test9@",13
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.byte "this is a test10@",13
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.byte "this is a test1*",13
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.byte "this is a test2*",13
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.byte "this is a test3*",13
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.byte "this is a test4*",13
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.byte "this is a test5*",13
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.byte "this is a test6*",13
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.byte "this is a test7*",13
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.byte "this is a test8*",13
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.byte "this is a test9*",13
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.byte "this is a test10*",13
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buffer_length=*-buffer
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.bss
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getc_timeout_end: .res 1
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getc_timeout_seconds: .res 1
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buff_length: .res 2
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;-- LICENSE FOR test_getc.s --
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; The contents of this file are subject to the Mozilla Public License
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; Version 1.1 (the "License"); you may not use this file except in
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; complianc
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