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u2.asm
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u2.asm
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; u2 snooper CDA
; assumes slot 3.
; snasm /l /z /m/ w /g u2.asm,u2.obj,,u2.lst
opt ws- ; relaxed white space
opt od+ ; direct-page optimization
opt l: ; : for local labels.
IDM_OR equ $e0c0b0
IDM_AR equ $e0c0b1
IDM_DR equ $e0c0b3
KEY_LEFT equ $08
KEY_RIGHT equ $15
KEY_UP equ $0b
KEY_DOWN equ $0a
KEY_ESC equ $1b
KBD equ $e0c000
KBDSTRB equ $e0c010
KEYMODREG equ $e0c025
; direct page
; rw = reserve word
; uses the __rs variable.
rsreset
page rw 1 ; current active page.
ptr rw 1
str_ptr rw 1
bcd rw 2
tmp rw 1
scratch rw 2 ; rl not supported...
addr rw 2
;
_SysBeep macro
ldx #$2c03
jsl $e10000
endm
_beep macro
local mmxx
mmxx = __mx
if mmxx<>0
php
rep #$30
endif
_SysBeep
if mmxx<>0
plp
mx mmxx
endif
endm
pstr macro
local .start,.end
db .end-.start ; n.b. - macro expansion sometimes displays the wrong value
.start
db \1
.end
endm
__set_bits macro
if '\1'='m'
bits = bits|%10
endif
if '\1'='M'
bits = bits|%10
endif
if '\1'='x'
bits = bits|%01
endif
if '\1'='X'
bits = bits|%01
endif
if '\1'='mx'
bits = bits|%11
endif
if '\1'='MX'
bits = bits|%11
endif
endm
; short m,x
short macro
local bits
bits = 0
if narg=0
bits = %11
else
rept narg
__set_bits \1
shift
endr
endif
sep #bits<<4
; __mx is auto-set by sep/rep
; mx __mx|bits
endm
long macro
local bits
bits = 0
if narg=0
bits = %11
else
rept narg
__set_bits \1
shift
endr
endif
rep #bits<<4
; mx __mx&~bits
endm
section code
pstr "Uthernet II Snooper"
dl StartUp
dl ShutDown
ShutDown
mx %00
rtl
StartUp
mx %00
phk
plb
lda >IDM_OR
sta saved_or
lda >IDM_AR
sta saved_ar
lda #$03 ;
short m,x
sta >IDM_OR
jsr screen_init
stz page
; jsr print_footer
jsr display_common
mainloop
:wait lda >$e0c000
bpl :wait
sta >$e0c010
and #$7f
cmp #'a'
blt :upper
cmp #'z'+1
bge :upper
and #~$20
:upper
cmp #$1b ; esc
beq quit
cmp #'Q'
beq quit
ldx #:ksize-2
:loop
cmp :k,x
bne :next
jsr (dispatch,x)
bra mainloop
:next
dex
dex
bpl :loop
bra :wait
;
; todo:
; i -> clear interrupts
PAGE_COMMON equ 0
PAGE_0 equ 1
PAGE_1 equ 2
PAGE_2 equ 3
PAGE_3 equ 4
PAGE_TX equ 5
PAGE_RX equ 6
PAGE_HELP equ 7
:k dw 'C','0','1','2','3','T','R','?',':',KEY_LEFT,KEY_RIGHT,KEY_DOWN,KEY_UP
:ksize equ *-:k
quit
long m,x
lda saved_or
sta >IDM_OR
lda saved_ar
sta >IDM_AR
rtl
mx %11
print_header
;
; x:y = c-string pointer.
;
stx str_ptr
sty str_ptr+1
jsr screen_clear
jsr print_str
jsr print_cr
jmp print_cr
dispatch
dw display_common,display_0,display_1,display_2,display_3,display_tx,display_rx,display_help
dw set_memory,:left,:right,:down,:up
:left
lda page
dec
bpl :d
lda #PAGE_RX
:d
sta page
asl
tax
jmp (dispatch,x)
:right
lda page
inc
cmp #PAGE_RX+1
bcc :d
lda #0
bra :d
; auto-increment wraps at $2000 so nothing special needed.
:down
lda page
cmp #PAGE_RX
beq :down.ok
cmp #PAGE_TX
beq :down.ok
rts
:down.ok
jmp dump_common
:up
lda page
cmp #PAGE_RX
beq :up.ok
cmp #PAGE_TX
beq :up.ok
rts
:up.ok
; $40 -> $5f; 60 -> $7f
lda >IDM_AR
bit #$1f
bne :up.dec
ora #$1f
sta >IDM_AR
jmp dump_common
:up.dec
dec
sta >IDM_AR
jmp dump_common
rdispatch
dw display_common,display_0,display_1,display_2,display_3,dump_common,dump_common,display_help
refresh
lda page
asl
tax
jmp (rdispatch,x)
display_help
mx %11
lda #PAGE_HELP
sta page
ldx #:title
ldy #:title>>8
jsr print_header
ldx #0
:loop
phx
lda :table+1,x
tay
lda :table,x
tax
jsr print_str_xy
jsr print_cr
plx
inx
inx
cpx #20*2
bcc :loop
rts
:table
dw :00,:01,:02,:03,:04,:05,:06,:07,:08,:09
dw :10,:11,:12,:13,:14,:15,:16,:17,:18,:19
:title db "U2 Snooper",0
:00 db "C - Common Registers",0
:01 db "0 - Socket 0 Registers",0
:02 db "1 - Socket 1 Registers",0
:03 db "2 - Socket 2 Registers",0
:04 db "3 - Socket 3 Registers",0
:05 db "R - Receive Buffer",0
:06 db "T - Transmit Buffer",0
:07 db ": - Write memory",0
:08 db "? - Help",0
:09 db "",0
:10 db "Socket Commands:",0
:11 db "$01: Open",0
:12 db "$02: Listen",0
:13 db "$04: Connect",0
:14 db "$08: Disconnect",0
:15 db "$10: Close",0
:16 db "$20: Send",0
:17 db "$21: Send Mac",0
:18 db "$22: Send Keep-Alive",0
:19 db "$40: Receive",0
print_register
mx %11
lda (ptr)
sta >IDM_AR+1
jsr print_hex
inc screen_x
ldy #1
; print the label
:loop
lda (ptr),y
bmi load
phy
jsr print
ply
iny
bra :loop
; read the data..
load
phy ; save
and #$7f
asl
tax ; byte count / type
jsr (table,x)
ply
iny
lda (ptr),y
tax
jmp (extra,x)
table
dw :rts
dw byte1
dw byte2
dw :rts
dw byte4
dw :rts
dw byte6
:rts
rts
XTRA_NOP equ 0
XTRA_DEC equ 2
XTRA_MR equ 4
XTRA_IR equ 6
XTRA_SN_MR equ 8
XTRA_SN_IR equ 10
XTRA_SN_SR equ 12
extra dw print_cr
dw do_xtra_dec
dw do_xtra_mr
dw do_xtra_ir
dw do_xtra_sn_mr
dw do_xtra_sn_ir
dw do_xtra_sn_sr
byte1
stz scratch+1 ; so XTRA_DEC will work
lda >IDM_DR
sta scratch
jmp print_hex
byte2
lda >IDM_DR
sta scratch+1
jsr print_hex
lda >IDM_DR
sta scratch
jmp print_hex
byte4 ; ip address...
rept 3
lda >IDM_DR
jsr print_dec
lda #'.'
jsr print
endr
lda >IDM_DR
jmp print_dec
byte6 ; mac address
rept 5
lda >IDM_DR
jsr print_hex
lda #':'
jsr print
endr
lda >IDM_DR
jmp print_hex
do_xtra_dec
lda #' '
jsr print
lda #'('
jsr print
ldx scratch
ldy scratch+1
jsr print_dec_16
lda #')'
jsr print
jmp print_cr
do_xtra_sn_sr
; print the socket status
lda #' '
jsr print
ldx #:srsize-2
lda scratch
:loop cmp :sr,x
beq :match
dex
dex
bpl :loop
jmp print_cr
:match
lda :ltable+1,x
tay
lda :ltable,x
tax
jsr print_str_xy
jmp print_cr
:sr dw $00,$13,$14,$17,$1c,$22,$32,$42,$5f,$15,$16,$18,$1a,$1b,$1d,$01
:srsize equ *-:sr
:ltable
dw :l00,:l13,:l14,:l17,:l1c,:l22,:l32,:l42,:l5f,:l15,:l16,:l18,:l1a,:l1b,:l1d,:l01
:l00 db 'closed',0
:l13 db 'init',0
:l14 db 'listen',0
:l17 db 'established',0
:l1c db 'close wait',0
:l22 db 'udp',0
:l32 db 'ipraw',0
:l42 db 'macraw',0
:l5f db 'pppoe',0
:l15 db 'syn sent',0
:l16 db 'syn recv',0
:l18 db 'fin wait',0
:l1a db 'closing',0
:l1b db 'time wait',0
:l1d db 'last ack',0
:l01 db 'arp',0
do_xtra_mr
; bit 7 (reset) should never be set (if this is an u2)
bit scratch
:bit7
bpl :bit4
ldx #:rst
ldy #:rst>>8
jsr print_str_xy
:bit4 lda scratch
and #%00001000
beq :bit3
ldx #:pb
ldy #:pb>>8
jsr print_str_xy
:bit3 lda scratch
and #%00000100
beq :bit1
ldx #:ppp
ldy #:ppp>>8
jsr print_str_xy
:bit1 lda scratch
and #%00000010
beq :bit0
ldx #:ai
ldy #:ai>>8
jsr print_str_xy
:bit0 lda scratch
and #%00000001
beq :rts
ldx #:ind
ldy #:ind>>8
jsr print_str_xy
:rts jmp print_cr
:rst db " rst",0
:pb db " pb",0
:ppp db " ppp",0
:ai db " ai",0
:ind db " ind",0
do_xtra_sn_mr
mx %11
lda #' '
jsr print
lda #:t>>8
sta str_ptr+1
lda scratch
and #$0f
cmp #6
bcc :ok
lda #6
:ok
asl ; x 2
asl ; x 4
; must be clc since <= 6*4
adc #:t
sta str_ptr
jsr print_str
:bit7
; only applies to udp
bit scratch
bpl :bit6
ldx #:multi
ldy #:multi>>8
jsr print_str_xy
:bit6
; only applies to macraw / socket 0.
bit scratch
bvc :bit5
ldx #:mf
ldy #:mf>>8
jsr print_str_xy
:bit5
; nd/mc depend on tcp/udp status.
lda scratch
and #%00100111
cmp #%00100001
beq :pnd
cmp #%00100010
beq :pmc
jmp print_cr
:pnd
ldx #:nd
ldy #:nd>>8
jsr print_str_xy
jmp print_cr
:pmc
ldx #:mc
ldy #:mc>>8
jsr print_str_xy
jmp print_cr
:t
db '---',0
db 'tcp',0
db 'udp',0
db 'ip ',0
db 'mac',0
db 'ppp',0
db '???',0
:multi db ' multi',0
:mf db ' mf',0
:nd db ' nd',0
:mc db ' mc',0
do_xtra_sn_ir
mx %11
lda #'-'
ldx #7
:loop1 sta :str+1,x
dex
bpl :loop1
lda scratch
ldx #7
:loop2
lsr
bcc :next
phx
pha
txa
lda :t,x
sta :str+1,x
pla
plx
:next dex
bpl :loop2
ldx #:str
ldy #:str>>8
jsr print_str_xy
jmp print_cr
:t db '???STRDC'
:str db ' --------',0
do_xtra_ir
mx %11
lda #'-'
ldx #7
:loop1 sta :str+1,x
dex
bpl :loop1
lda scratch
ldx #7
:loop2
lsr
bcc :next
phx
pha
txa
lda :t,x
sta :str+1,x
pla
plx
:next dex
bpl :loop2
ldx #:str
ldy #:str>>8
jsr print_str_xy
jmp print_cr
:t db 'CUP?3210'
:str db ' --------',0
display_common
mx %11
stz page
ldx #:header
ldy #:header>>8
jsr print_header
lda #0
sta >IDM_AR
sta >IDM_AR+1
ldx #0
:loop
lda :table,x
sta ptr
lda :table+1,x
sta ptr+1
ora ptr
beq :done
phx
jsr print_register
plx
inx
inx
bra :loop
:done
rts
; jmp print_footer
:table
dw :r0,:r1,:r2,:r3,:r4,:r5,:r6,:r7,:r8
dw :r9,:r10,:r11,:r12,:r13,:r14,:r15
dw 0
;; offset, c-string, offset, bytes,
:r0 db $00,"MR: ",$81,XTRA_MR
:r1 db $01,"Gateway: ",$84,0
:r2 db $05,"Subnet: ",$84,0
:r3 db $09,"MAC: ",$86,0
:r4 db $0f,"IP: ",$84,0
:r5 db $15,"IR: ",$81,XTRA_IR
:r6 db $16,"IMR: ",$81,0
:r7 db $17,"RTR: ",$82,XTRA_DEC
:r8 db $19,"RCR ",$81,XTRA_DEC
:r9 db $1a,"RMSR: ",$81,0
:r10 db $1b,"TMSR: ",$81,0
:r11 db $2a,"U IP: ",$84,0
:r12 db $2e,"U Port: ",$82,XTRA_DEC
:r13 db $1c,"PPPoE Auth ",$82,0 ; intentionally out of order
:r14 db $28,"PPPoE Timer: ",$81,0
:r15 db $29,"PPPoE Magic: ",$81,0
:header db "Common Registers",0
print_socket_header
and #$03
ora #$30
sta :header+7
ldx #:header
ldy #:header>>8
jmp print_header
:header db "Socket 0 Registers",0
display_0
mx %11
lda #1
sta page
lda #4
sta >IDM_AR
jsr print_socket_header
bra reg
display_1
mx %11
lda #2
sta page
lda #5
sta >IDM_AR
jsr print_socket_header
bra reg
display_2
mx %11
lda #3
sta page
lda #6
sta >IDM_AR
jsr print_socket_header
bra reg
display_3
mx %11
lda #4
sta page
lda #7
sta >IDM_AR
jsr print_socket_header
; bra reg
reg
lda #0
sta >IDM_AR+1
ldx #0
:loop
lda :table,x
sta ptr
lda :table+1,x
sta ptr+1
ora ptr
beq :done
phx
jsr print_register
plx
inx
inx
bra :loop
:done
rts
; jmp print_footer
:table
dw :r0,:r1,:r2,:r3,:r4,:r5,:r6,:r7,:r8
dw :r9,:r10,:r11,:r12,:r13,:r14,:r15,:r16
dw :r17,:r18,:r19,:r20
dw 0
;; c-string, offset, bytes, extra
:r0 db $00,"MR: ",$81,XTRA_SN_MR
:r1 db $01,"CR: ",$81,0
:r2 db $02,"IR: ",$81,XTRA_SN_IR
:r3 db $03,"SR: ",$81,XTRA_SN_SR
:r4 db $04,"Port: ",$82,XTRA_DEC
:r5 db $06,"Dest MAC: ",$86,0
:r6 db $0c,"Dest IP: ",$84,0
:r7 db $10,"Dest Port: ",$82,XTRA_DEC
:r8 db $12,"MSS: ",$82,XTRA_DEC
:r9 db $14,"Proto: ",$81,0
:r10 db $15,"TOS: ",$81,0
:r11 db $16,"TTL: ",$81,0
:r12 db $2d,"Fragment: ",$82,0 ; intentionally out of order
:r13 db $1e,"RX Buf Size: ",$81,0
:r14 db $1f,"TX Buf Size: ",$81,0
:r15 db $20,"TX FSR: ",$82,XTRA_DEC
:r16 db $22,"TX RD: ",$82,0
:r17 db $24,"TX WR: ",$82,0
:r18 db $26,"RX RSR: ",$82,XTRA_DEC
:r19 db $28,"RX RD: ",$82,0
:r20 db $2a,"RX WR: ",$82,0
display_tx
lda #PAGE_TX
sta page
ldx #:header
ldy #:header>>8
jsr print_header
lda #$40
sta >IDM_AR
lda #0
sta >IDM_AR+1
bra dump_common
:header db "Transmit Buffer",0
display_rx
lda #PAGE_RX
sta page
ldx #:header
ldy #:header>>8
jsr print_header
lda #$60
sta >IDM_AR
lda #0
sta >IDM_AR+1
bra dump_common
:header db "Receive Buffer",0
;
; todo -- need to save and restore the original address so re-display after set-memory doesn't jump all over.
;
;
dump_common
ldy #4
sty screen_y
stz screen_x
ldy #8
:yloop
phy
lda >IDM_AR
jsr print_hex
lda >IDM_AR+1
jsr print_hex
; lda #' '
; jsr print
inc screen_x
ldx #8
:xloop1
lda >IDM_DR
sta xbuffer,x
phx
jsr print_hex
plx
dex
bne :xloop1
; lda #' '
; jsr print
inc screen_x
ldx #8
:xloop2
lda >IDM_DR
sta xbuffer+8,x
phx
jsr print_hex
plx
dex
bne :xloop2
jsr print_cr
; print the hexdump under it
lda #5
sta screen_x
ldx #8
:xloop3
phx
lda xbuffer,x
jsr :printc
plx
dex
bne :xloop3
inc screen_x
ldx #8
:xloop4
phx
lda xbuffer+8,x
jsr :printc
plx
dex
bne :xloop4