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emailler/client/nb65/d64_upload.s

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;use the NB65 API to send a d64 disk via TFTP
;
;
.ifndef NB65_API_VERSION_NUMBER
.define EQU =
.include "../inc/nb65_constants.i"
.endif
.include "../ip65/copymem.s"
.include "../inc/common.i"
.import print_a
.import get_key
.import get_filtered_input
.import filter_dns
.macro cout arg
lda arg
jsr print_a
.endmacro
;######### KERNEL functions
CHKIN = $ffc6
CHKOUT = $ffc9
CHRIN = $ffcf
CHROUT = $ffd2
CLALL = $FFE7
CLOSE = $ffc3
OPEN = $ffc0
READST = $ffb7
SETNAM = $ffbd
SETLFS = $ffba
.bss
current_byte: .res 1
track: .res 1
sector: .res 1
sectors_in_track: .res 1
error_buffer: .res 128
command_buffer: .res 128
sector_buffer: .res 256
nb65_param_buffer: .res $20
sector_buffer_address: .res 2
.zeropage
temp_ptr: .res 2
.segment "STARTUP" ;this is what gets put at the start of the file on the C64
.word basicstub ; load address
.macro print arg
ldax arg
ldy #NB65_PRINT_ASCIIZ
jsr NB65_DISPATCH_VECTOR
.endmacro
.macro print_cr
lda #13
jsr print_a
.endmacro
.macro call arg
ldy arg
jsr NB65_DISPATCH_VECTOR
.endmacro
basicstub:
.word @nextline
.word 2003
.byte $9e
.byte <(((init / 1000) .mod 10) + $30)
.byte <(((init / 100 ) .mod 10) + $30)
.byte <(((init / 10 ) .mod 10) + $30)
.byte <(((init ) .mod 10) + $30)
.byte 0
@nextline:
.word 0
;look for NB65 signature at location pointed at by AX
look_for_signature:
stax temp_ptr
ldy #3
@check_one_byte:
lda (temp_ptr),y
cmp nb65_signature,y
bne @bad_match
dey
bpl@check_one_byte
clc
rts
@bad_match:
sec
rts
init:
print #signon_message
ldax #NB65_CART_SIGNATURE ;where signature should be in cartridge
jsr look_for_signature
bcc @found_nb65_signature
ldax #NB65_RAM_STUB_SIGNATURE ;where signature should be in RAM
jsr look_for_signature
bcc :+
jmp nb65_signature_not_found
:
jsr NB65_RAM_STUB_ACTIVATE ;we need to turn on NB65 cartridge
@found_nb65_signature:
print #initializing
print #nb65_signature
ldy #NB65_INITIALIZE
jsr NB65_DISPATCH_VECTOR
bcc :+
print #failed
jsr print_nb65_errorcode
jmp bad_boot
:
print #ok
print_cr
; ########################
; main program goes here:
;
jsr CLALL
; ldx #18
; stx track
; ldx #1
; stx sector
; ldx #21
; stx sectors_in_track
; ldax #sector_buffer
; jsr send_next_block
; rts
@send_1_image:
lda #$93 ;cls
jsr print_a
print #signon_message
jsr reset_counters_to_first_sector
print #enter_filename
ldax #filter_dns ;this is pretty close to being a filter for legal chars in file names as well
jsr get_filtered_input
bcs @no_filename_entered
stax nb65_param_buffer+NB65_TFTP_FILENAME
print #position_cursor_for_track_display
ldax #send_next_block
stax nb65_param_buffer+NB65_TFTP_POINTER
ldax #nb65_param_buffer
call #NB65_TFTP_CALLBACK_UPLOAD
bcc :+
print_cr
print #failed
jmp print_nb65_errorcode
:
lda #15 ; filenumber 15 - command channel
jsr CLOSE
print_cr
print #ok
print #press_a_key_to_continue
jsr get_key
jmp @send_1_image ;done! so go again
@no_filename_entered:
rts
send_next_block:
;tftp upload callback routine
;AX will point to address to fill
stax sector_buffer_address
lda track
cmp #36
beq @past_last_track
print #position_cursor_for_track_display
jsr print_current_sector
jsr read_sector
lda #$30
cmp error_buffer
bne @was_an_error
@after_error_check:
jsr move_to_next_sector
bcc @not_last_sector
ldax #$100
rts
@not_last_sector:
; jsr dump_sector ;DEBUG
inc sector_buffer_address+1
jsr read_sector
jsr move_to_next_sector
ldax #$200
; jsr dump_sector ;DEBUG
rts
@past_last_track:
ldax #$0000
rts
@was_an_error:
print #position_cursor_for_error_display
print #drive_error
print_cr
jsr print_current_sector
print #error_buffer
jmp @after_error_check
print_current_sector:
print #track_no
lda track
jsr byte_to_ascii
pha
txa
jsr print_a
pla
jsr print_a
print #sector_no
lda sector
jsr byte_to_ascii
pha
txa
jsr print_a
pla
jsr print_a
print_cr
rts
dump_sector:
;hex dump sector
lda #0
sta current_byte
@dump_byte:
ldy current_byte
lda sector_buffer,y
call #NB65_PRINT_HEX
inc current_byte
bne @dump_byte
rts
read_sector:
;routine to read a sector cribbed from http://codebase64.org/doku.php?id=base:reading_a_sector_from_disk
; - requires track and sector values be set first
; sector will be written to address whos value is stored in sector_data
; open the channel file
jsr make_read_sector_command
lda #1
ldx #<cname
ldy #>cname
jsr SETNAM
lda #02
ldx #08
ldy #02
jsr SETLFS
jsr OPEN
bcs @error
ldx #<command_buffer
ldy #>command_buffer
lda #12
jsr SETNAM
lda #15
ldx $BA ;use whatever was last device #
ldy #15
jsr SETLFS
jsr OPEN
bcs @error
jsr check_error_channel
lda #$30
cmp error_buffer
beq @was_not_an_error
print #error_buffer
@was_not_an_error:
ldx #$02 ; filenumber 2
jsr CHKIN ;(file 2 now used as input)
lda sector_buffer_address
sta temp_ptr
lda sector_buffer_address+1
sta temp_ptr+1
ldy #$00
@loop:
jsr CHRIN ;(get a byte from file)
sta (temp_ptr),Y ; write byte to memory
iny
bne @loop ; next byte, end when 256 bytes are read
@close:
lda #15 ; filenumber 15
jsr CLOSE
lda #$02 ; filenumber 2
jsr CLOSE
ldx #$00 ; filenumber 0 = keyboard
jsr CHKIN ;(keyboard now input device again)
rts
@error:
pha
print #error_opening_channel
pla
call #NB65_PRINT_HEX
jmp @close
check_error_channel:
LDX #$0F ; filenumber 15
JSR CHKIN ;(file 15 now used as input)
LDY #$00
@loop:
JSR READST ;(read status byte)
BNE @eof ; either EOF or read error
JSR CHRIN ;(get a byte from file)
sta error_buffer,y
iny
JMP @loop ; next byte
@eof:
lda #0
sta error_buffer,y
LDX #$00 ; filenumber 0 = keyboard
JSR CHKIN ;(keyboard now input device again)
RTS
bad_boot:
print #press_a_key_to_continue
restart:
jsr get_key
jmp $fce2 ;do a cold start
print_a_as_errorcode:
pha
lda #' '
jsr print_a
print #error_code
pla
call #NB65_PRINT_HEX
rts
print_nb65_errorcode:
print #error_code
call #NB65_GET_LAST_ERROR
call #NB65_PRINT_HEX
print_cr
rts
nb65_signature_not_found:
ldy #0
:
lda nb65_signature_not_found_message,y
beq restart
jsr print_a
iny
jmp :-
make_read_sector_command:
;fill command buffer with command to read in track & sector
;returns length of command in Y
ldy #0
lda #85 ;"U"
sta command_buffer,y
iny
lda #$31 ;"1"
sta command_buffer,y
iny
lda #$20 ;" "
sta command_buffer,y
iny
lda #$32 ;"2" - file number
sta command_buffer,y
iny
lda #$20 ;" "
sta command_buffer,y
iny
lda #$30 ;"0" - drive number
sta command_buffer,y
iny
lda #$20 ;" "
sta command_buffer,y
iny
lda track
jsr byte_to_ascii
pha
txa
sta command_buffer,y
pla
iny
sta command_buffer,y
iny
lda #$20 ;" "
sta command_buffer,y
iny
lda sector
jsr byte_to_ascii
pha
txa
sta command_buffer,y
pla
iny
sta command_buffer,y
iny
lda #0
sta command_buffer,y ;make it ASCIIZ so we can print it
rts
byte_to_ascii:
cmp #30
bmi @not_30
ldx #$33
clc
adc #18
rts
@not_30:
cmp #20
bmi @not_20
ldx #$32
clc
adc #28
rts
@not_20:
cmp #10
bmi @not_10
ldx #$31
clc
adc #38
rts
@not_10:
ldx #$30
clc
adc #48
rts
reset_counters_to_first_sector:
ldx #1
stx track
dex
stx sector
ldx #21
stx sectors_in_track
rts
move_to_next_sector:
inc sector
lda sector
cmp sectors_in_track
beq @move_to_next_track
rts
@move_to_next_track:
lda #0
sta sector
inc track
lda track
cmp #18
bne @not_track_18
lda #19
sta sectors_in_track
clc
rts
@not_track_18:
cmp #25
bne @not_track_25
lda #18
sta sectors_in_track
clc
rts
@not_track_25:
cmp #31
bne @not_track_31
lda #17
sta sectors_in_track
clc
rts
@not_track_31:
lda track
cmp #36 ;carry will be set if hit track 36
rts
.rodata
error_code:
.byte "ERROR CODE: $",0
press_a_key_to_continue:
.byte "PRESS A KEY TO CONTINUE",13,0
failed:
.byte "FAILED ", 0
ok:
.byte "OK ", 0
initializing:
.byte "INITIALIZING ",0
track_no:
.byte "TRACK ",0
sector_no:
.byte " SECTOR ",0
signon_message:
.byte "D64 UPLOADER V0.1",13,0
enter_filename:
.byte "SEND AS: ",0
drive_error:
.byte "DRIVE ACCESS ERROR - ",0
nb65_signature_not_found_message:
.byte "NO NB65 API FOUND",13,"PRESS ANY KEY TO RESET", 0
error_opening_channel:
.byte "ERROR OPENING CHANNEL $",0
disk_access:
.byte 13,13,13,13,13,"SENDING TO CHANNEL $",0
nb65_signature:
.byte $4E,$42,$36,$35 ; "NB65" - API signature
.byte ' ',0 ; so we can use this as a string
position_cursor_for_track_display:
; .byte $13,13,13,13,13,13,13,13,13,13,13," SENDING ",0
.byte $13,13,13,"SENDING ",0
position_cursor_for_error_display:
.byte $13,13,13,13,"LAST ",0
cname: .byte '#'
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