mirror of
https://github.com/bobbimanners/emailler.git
synced 2024-07-27 12:29:21 +00:00
371 lines
6.6 KiB
ArmAsm
371 lines
6.6 KiB
ArmAsm
.include "../inc/common.i"
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.include "../inc/commonprint.i"
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.include "../inc/net.i"
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.include "../inc/char_conv.i"
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.include "../inc/c64keycodes.i"
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.import get_key
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.import __CODE_LOAD__
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.import __CODE_SIZE__
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.import __RODATA_SIZE__
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.import __DATA_SIZE__
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.import mul_8_16
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.importzp acc16
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.segment "IP65ZP" : zeropage
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; pointer for moving through buffers
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buffer_ptr: .res 2 ; source pointer
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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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.segment "EXEHDR" ;this is what gets put an the start of the file on the Apple 2
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.addr __CODE_LOAD__-$11 ; Start address
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.word __CODE_SIZE__+__RODATA_SIZE__+__DATA_SIZE__+4 ; Size
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jmp init
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.data
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get_next_byte:
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lda $ffff
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inc get_next_byte+1
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bne :+
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inc get_next_byte+2
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:
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rts
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.bss
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DISPLAY_LINES=20
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page_counter: .res 1
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MAX_PAGES = 50
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page_pointer_lo: .res MAX_PAGES
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page_pointer_hi: .res MAX_PAGES
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resource_counter: .res 1
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MAX_RESOURCES = 25
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resource_pointer_lo: .res MAX_RESOURCES
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resource_pointer_hi: .res MAX_RESOURCES
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resource_type: .res MAX_RESOURCES
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this_is_last_page: .res 1
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resource_hostname: .res 128
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resource_port: .res 2
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resource_selector: .res 256
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temp_ax: .res 2
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.code
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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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ldax #initial_location
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sta resource_pointer_lo
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stx resource_pointer_hi
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ldx #0
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jsr show_resource
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rts
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show_buffer:
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ldax #input_buffer
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stax get_next_byte+1
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lda #0
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sta page_counter
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@do_one_page:
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lda #147 ; 'CLR/HOME'
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jsr print_a
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ldax #page_header
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jsr print
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lda page_counter
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jsr print_hex
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ldax #port_no
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jsr print
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lda resource_port+1
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jsr print_hex
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lda resource_port
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jsr print_hex
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jsr print_cr
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ldax #resource_hostname
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jsr print
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ldax #resource_selector
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jsr print
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jsr print_cr
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ldx page_counter
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lda get_next_byte+1
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sta page_pointer_lo,x
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lda get_next_byte+2
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sta page_pointer_hi,x
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inc page_counter
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lda #0
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sta resource_counter
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@next_line:
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jsr get_next_byte
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cmp #'.'
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bne @not_last_line
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lda #1
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sta this_is_last_page
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jmp @done
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@not_last_line:
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cmp #'i'
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beq @info_line
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cmp #'0'
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beq @standard_resource
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cmp #'1'
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beq @standard_resource
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;if we got here, we know not what it is
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jmp @skip_to_end_of_line
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@standard_resource:
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ldx resource_counter
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sta resource_type,x
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sec
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lda get_next_byte+1
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sbc #1 ;since "get_next_byte" did the inc, we need to backtrack 1 byte
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sta resource_pointer_lo,x
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lda get_next_byte+2
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sbc #0 ;in case there was an overflow on the low byte
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sta resource_pointer_hi,x
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inc resource_counter
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lda $d3
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beq :+
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jsr print_cr
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:
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lda #18
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jsr print_a
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lda resource_counter
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clc
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adc #'a'-1
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jsr print_a
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lda #146
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jsr print_a
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lda #' '
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jsr print_a
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@info_line:
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@print_until_tab:
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@next_byte:
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jsr get_next_byte
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cmp #$09
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beq @skip_to_end_of_line
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tax
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lda ascii_to_petscii_table,x
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jsr print_a
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jmp @next_byte
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@skip_to_end_of_line:
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jsr get_next_byte
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cmp #$0A
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bne @skip_to_end_of_line
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lda $d3
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cmp #0
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beq :+
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jsr print_cr
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:
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lda $d6
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cmp #DISPLAY_LINES
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bmi @next_line
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lda #0
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sta this_is_last_page
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@done:
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@get_keypress:
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jsr get_key
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cmp #' '
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beq @go_next_page
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cmp #KEYCODE_F7
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beq @go_next_page
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cmp #KEYCODE_DOWN
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beq @go_next_page
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cmp #KEYCODE_F1
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beq @go_prev_page
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cmp #KEYCODE_UP
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beq @go_prev_page
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cmp #KEYCODE_ABORT
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beq @quit
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;if fallen through we don't know what the keypress means, go get another one
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and #$7f ;turn off the high bit
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sec
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sbc #$40
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bmi @not_a_resource
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cmp resource_counter
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beq @valid_resource
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bcs @not_a_resource
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@valid_resource:
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tax
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dex
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jsr show_resource
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@not_a_resource:
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jsr print_hex
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jmp @get_keypress
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@go_next_page:
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lda this_is_last_page
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bne @get_keypress
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jmp @do_one_page
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@quit:
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rts
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@go_prev_page:
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ldx page_counter
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dex
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bne @not_first_page
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jmp @get_keypress
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@not_first_page:
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dex
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dec page_counter
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dec page_counter
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lda page_pointer_lo,x
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sta get_next_byte+1
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lda page_pointer_hi,x
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sta get_next_byte+2
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jmp @do_one_page
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;get a gopher resource
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;X should be the selected resource number
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;the resources selected should be loaded into resource_pointer_*
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show_resource:
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lda resource_pointer_lo,x
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sta buffer_ptr
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lda resource_pointer_hi,x
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sta buffer_ptr+1
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ldy #0
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ldx #0
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jsr @skip_to_next_tab
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;should now be pointing at the tab just before the selector
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@copy_selector:
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iny
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lda (buffer_ptr),y
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cmp #09
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beq @end_of_selector
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sta resource_selector,x
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inx
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jmp @copy_selector
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@end_of_selector:
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lda #$00
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sta resource_selector,x
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tax
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;should now be pointing at the tab just before the hostname
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@copy_hostname:
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iny
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lda (buffer_ptr),y
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cmp #09
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beq @end_of_hostname
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sta resource_hostname,x
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inx
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jmp @copy_hostname
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@end_of_hostname:
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lda #$00
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sta resource_hostname,x
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;should now be pointing at the tab just before the port number
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lda #0
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sta resource_port
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sta resource_port+1
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@parse_port:
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iny
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beq @end_of_port
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lda (buffer_ptr),y
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cmp #$0D
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beq @end_of_port
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ldax resource_port
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stax acc16
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lda #10
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jsr mul_8_16
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ldax acc16
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stax resource_port
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lda (buffer_ptr),y
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sec
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sbc #'0'
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clc
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adc resource_port
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sta resource_port
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bcc :+
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inc resource_port+1
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jmp @parse_port
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@end_of_port:
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@done:
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jmp show_buffer
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@skip_to_next_tab:
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iny
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beq @done_skipping_over_tab
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lda (buffer_ptr),y
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cmp #$09
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bne @skip_to_next_tab
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@done_skipping_over_tab:
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rts
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;assumes acc16& A already set
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test_mul_8_16:
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sta temp_ax
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lda acc16+1
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jsr print_hex
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lda acc16
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jsr print_hex
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lda #'*'
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jsr print_a
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lda temp_ax
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jsr print_hex
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lda #'='
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jsr print_a
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lda temp_ax
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jsr mul_8_16
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lda acc16+1
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jsr print_hex
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lda acc16
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jsr print_hex
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jsr print_cr
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rts
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.rodata
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input_buffer:
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.incbin "rob_gopher.txt"
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.incbin "retro_gopher.txt"
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.byte 0
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page_header:
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.byte "PAGE NO $",0
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port_no:
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.byte "PORT NO ",0
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initial_location:
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.byte "1luddite",$09,"/luddite/",$09,"retro-net.org",$09,"70",$0D,$0A,0
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