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emailler/client/carts/netboot.s
jonnosan 82259443a8 drivers now display base I/O address 
git-svn-id: http://svn.code.sf.net/p/netboot65/code@310 93682198-c243-4bdb-bd91-e943c89aac3b
2011-05-22 09:25:09 +00:00

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8.4 KiB
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; #############
;
; This will boot a C64 with an RR-NET compatible cs8900a from the network
; requires
; 1) a DHCP server, and
; 2) a TFTP server that responds to requests on the broadcast address (255.255.255.255) and that will serve a file called 'BOOTC64.PRG'.
;
; jonno@jamtronix.com - January 2009
;
.include "../inc/common.i"
.include "../inc/commonprint.i"
.include "../inc/c64keycodes.i"
.include "../inc/menu.i"
.import ip65_init
.import dhcp_init
.import tftp_ip
.importzp tftp_filename
.import tftp_load_address
.import tftp_download
.import cls
.import beep
.import exit_to_basic
.import timer_vbl_handler
.import get_key_ip65
.import cfg_ip
.import cfg_netmask
.import cfg_gateway
.import cfg_dns
.import cfg_tftp_server
.import cfg_get_configuration_ptr
.import copymem
.importzp copy_src
.importzp copy_dest
.import get_filtered_input
.import __DATA_LOAD__
.import __DATA_RUN__
.import __DATA_SIZE__
.import __SELF_MODIFIED_CODE_LOAD__
.import __SELF_MODIFIED_CODE_RUN__
.import __SELF_MODIFIED_CODE_SIZE__
directory_buffer = $6020
.bss
tmp_load_address: .res 2
.data
exit_cart:
lda #$02
sta $de00 ;turns off RR cartridge by modifying GROUND and EXROM
call_downloaded_prg:
jsr $0000 ;overwritten when we load a file
jmp init
get_value_of_axy: ;some more self-modifying code
lda $ffff,y
rts
.segment "CARTRIDGE_HEADER"
.word init ;cold start vector
.word $FE47 ;warm start vector
.byte $C3,$C2,$CD,$38,$30 ; "CBM80"
.byte $0,$0,$0 ;reserved for future use
.byte $0,$0,$0 ;reserved for future use
.byte $0,$0,$0 ;reserved for future use
.byte $0,$0,$0 ;reserved for future use
.byte $0,$0,$0 ;reserved for future use
.code
init:
;first let the kernal do a normal startup
sei
jsr $fda3 ;initialize CIA I/O
jsr $fd50 ;RAM test, set pointers
jsr $fd15 ;set vectors for KERNAL
jsr $ff5B ;init. VIC
cli ;KERNAL init. finished
;we need to set up BASIC as well
jsr $e453 ;set BASIC vectors
jsr $e3bf ;initialize zero page
;set some funky colours
LDA #$05 ;green
STA $D020 ;border
LDA #$00 ;black
STA $D021 ;background
lda #$05 ;petscii for white text
jsr print_a
;relocate our r/w data
ldax #__DATA_LOAD__
stax copy_src
ldax #__DATA_RUN__
stax copy_dest
ldax #__DATA_SIZE__
jsr copymem
ldax #__SELF_MODIFIED_CODE_LOAD__
stax copy_src
ldax #__SELF_MODIFIED_CODE_RUN__
stax copy_dest
ldax #__SELF_MODIFIED_CODE_SIZE__
jsr copymem
ldax #netboot_msg
jsr print_ascii_as_native
print_driver_init
jsr ip65_init
bcs @init_failed
jsr dhcp_init
bcc init_ok
jsr ip65_init ;if DHCP failed, then reinit the IP stack (which will reset IP address etc that DHCP messed with to cartridge default values)
bcc init_ok
@init_failed:
print_failed
jsr print_errorcode
jsr wait_for_keypress
jmp exit_to_basic
init_ok:
ldx #$03
:
lda cfg_tftp_server,x
sta tftp_ip,x
dex
bpl :-
jsr print_cr
jsr print_ip_config
tftp_boot:
ldax #tftp_dir_filemask
jsr get_tftp_directory_listing
bcs return_to_main
@boot_filename_set:
;AX now points to filename
jsr download
bcc file_downloaded_ok
tftp_boot_failed:
jsr wait_for_keypress
return_to_main:
jmp tftp_boot
file_downloaded_ok:
ldax tftp_load_address
boot_into_file:
stax tmp_load_address ;use the param buffer as a temp holding place for the load address
;get ready to bank out
jsr $ffe7 ; make sure all files have been closed.
;check whether the file we just downloaded was a BASIC prg
lda tmp_load_address
cmp #01
bne @not_a_basic_file
lda tmp_load_address+1
cmp #$08
bne @not_a_basic_file
jsr $e453 ;set BASIC vectors
jsr $e3bf ;initialize BASIC
jsr $a86e
jsr $a533 ; re-bind BASIC lines
ldx $22 ;load end-of-BASIC pointer (lo byte)
ldy $23 ;load end-of-BASIC pointer (hi byte)
stx $2d ;save end-of-BASIC pointer (lo byte)
sty $2e ;save end-of-BASIC pointer (hi byte)
jsr $a659 ; CLR (reset variables)
ldax #$a7ae ; jump to BASIC interpreter loop
jmp exit_cart_via_ax
@not_a_basic_file:
ldax tmp_load_address
exit_cart_via_ax:
sta call_downloaded_prg+1
stx call_downloaded_prg+2
jmp exit_cart
get_tftp_directory_listing:
stax tftp_filename
ldax #directory_buffer
stax tftp_load_address
ldax #getting_dir_listing_msg
jsr print_ascii_as_native
jsr tftp_download
bcs @dir_failed
lda directory_buffer ;get the first byte that was downloaded
bne :+
jmp @no_files_on_server
:
;switch to lower case charset
lda #23
sta $d018
@loop_till_filename_entered:
ldax #directory_buffer
ldy #1 ;filenames will be ASCII
jsr select_option_from_menu
bcs @loop_till_filename_entered
@tftp_filename_set:
stax copy_dest
stax get_value_of_axy+1
ldy #0
jsr get_value_of_axy ;A now == first char in string we just downloaded
cmp #'$'
bne @not_directory_name
;it's a directory name, so we need to append the file mask to end of it
;this will fail if the file path is more than 255 characters long
@look_for_trailing_zero:
iny
inc copy_dest
bne :+
inc copy_dest+1
:
jsr get_value_of_axy ;A now == next char in string we just downloaded
bne @look_for_trailing_zero
; got trailing zero
ldax #tftp_dir_filemask+1 ;skip the leading '$'
stax copy_src
ldax #$07
jsr copymem
ldax get_value_of_axy+1
jmp get_tftp_directory_listing
@not_directory_name:
ldax get_value_of_axy+1
clc
rts
@dir_failed:
ldax #dir_listing_fail_msg
jsr print_ascii_as_native
jsr print_errorcode
jsr print_cr
ldax #tftp_file
jmp @tftp_filename_set
@no_files_on_server:
ldax #no_files
jsr print_ascii_as_native
jmp tftp_boot_failed
bad_boot:
jsr wait_for_keypress
jmp $fe66 ;do a wam start
download: ;AX should point at filename to download
stax tftp_filename
ldax #$0000 ;load address will be first 2 bytes of file we download (LO/HI order)
stax tftp_load_address
ldax #downloading_msg
jsr print_ascii_as_native
ldax tftp_filename
jsr print_ascii_as_native
jsr print_cr
jsr tftp_download
bcc :+
ldax #tftp_download_fail_msg
jsr print_ascii_as_native
jsr print_errorcode
sec
rts
:
ldax #tftp_download_ok_msg
jsr print_ascii_as_native
clc
rts
wait_for_keypress:
ldax #press_a_key_to_continue
jsr print_ascii_as_native
@loop:
jsr $ffe4
beq @loop
rts
get_key:
@loop:
jsr $ffe4
beq @loop
rts
.rodata
netboot_msg:
.byte 14,10,"NETBOOT - V"
.include "../inc/version.i"
.byte 10,0
downloading_msg: .byte "down"
loading_msg: .asciiz "loading "
getting_dir_listing_msg: .byte "fetching directory",10,0
dir_listing_fail_msg:
.byte "dir failed",10,0
tftp_download_fail_msg:
.byte "download failed", 10, 0
tftp_download_ok_msg:
.byte "down"
load_ok_msg:
.byte "load OK", 10, 0
tftp_dir_filemask:
.asciiz "$/*.prg"
tftp_file:
.asciiz "BOOTC64.PRG"
no_files:
.byte "No files",10,0
;we need a 'dummy' segment here - some drivers use this segment (e.g. wiznet), some don't (e.g. rr-net)
;if we don't declare this, we get an 'undefined segment' error when linking to a driver that doesn't use it.
.segment "SELF_MODIFIED_CODE"
;-- LICENSE FOR netboot.s --
; The contents of this file are subject to the Mozilla Public License
; Version 1.1 (the "License"); you may not use this file except in
; compliance with the License. You may obtain a copy of the License at
; http://www.mozilla.org/MPL/
;
; Software distributed under the License is distributed on an "AS IS"
; basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
; License for the specific language governing rights and limitations
; under the License.
;
; The Original Code is netboot65.
;
; The Initial Developer of the Original Code is Jonno Downes,
; jonno@jamtronix.com.
; Portions created by the Initial Developer are Copyright (C) 2009
; Jonno Downes. All Rights Reserved.
; -- LICENSE END --
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