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hisiocode-diag.src
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hisiocode-diag.src
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; highsiocode-diag.src - highspeed SIO routine, optional diagnostic code
;
; Copyright (c) 2003-2009 by Matthias Reichl <[email protected]>
;
; This program is free software; you can redistribute it and/or modify
; it under the terms of the GNU General Public License as published by
; the Free Software Foundation; either version 2 of the License, or
; (at your option) any later version.
;
; This program is distributed in the hope that it will be useful,
; but WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
; GNU General Public License for more details.
;
; You should have received a copy of the GNU General Public License
; along with this program; if not, write to the Free Software
; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
; the code starting here is only for diagnostic purposes and is
; normally not included
.if .def DIAGSIO
?DIAGS .DC $20 0
?DIAGB .DC $20 0
?DIAGB2 .DC $20 0
?DIAGE .DC $20 0
?DIAGC .DC $20 0
?DIAGBT .BYTE 0
?DIAGX .BYTE 0
?DIAGST .BYTE 0
?DIAGER .BYTE 0
.if .def DIAGTIM
?TSTAMP .DC 4 0
.endif
PDIAG LDA ?DIAGER
BNE ?PDIAG0
RTS
?PDIAG0 LDA #0
STA ?DIAGBT
?PDIAG1 LDX ?DIAGBT
CPX #$0C
BEQ ?PDIAG2
LDA $0300,X
JSR ?PHEX
LDA #$20
JSR ?PUTCHR
INC ?DIAGBT
BNE ?PDIAG1
?PDIAG2 LDA #155
JSR ?PUTCHR
.if .def DIAGTIM
; print timestamp
LDA ?TSTAMP
JSR ?PHEX
LDA ?TSTAMP+1
JSR ?PHEX
LDA ?TSTAMP+2
JSR ?PHEX
LDA #'.
JSR ?PUTCHR
LDA ?TSTAMP+3
JSR ?PHEX
LDA #':
JSR ?PUTCHR
LDA #32
JSR ?PUTCHR
.endif
LDA #0
STA ?DIAGBT
?PDIAG3 LDX ?DIAGBT
CPX ?DIAGER
BEQ ?PDIAG4
LDA ?DIAGS,X ; phase/stage
JSR ?PHEX
LDA #$20
JSR ?PUTCHR
LDX ?DIAGBT
LDA ?DIAGE,X ; error/status
JSR ?PHEX
LDA #$20
JSR ?PUTCHR
LDX ?DIAGBT
LDA ?DIAGB,X ; last ack/nak byte
JSR ?PHEX
LDA #$20
JSR ?PUTCHR
LDX ?DIAGBT
LDA ?DIAGC,X ; current byte count
JSR ?PHEX
LDA #$20
JSR ?PUTCHR
LDX ?DIAGBT
LDA ?DIAGB2,X ; last received character
JSR ?PHEX
LDA #155
JSR ?PUTCHR
INC ?DIAGBT
BNE ?PDIAG3
?PDIAG4 RTS
?PHEX PHA
LSR
LSR
LSR
LSR
TAX
LDA ?HEXTAB,X
JSR ?PUTCHR
PLA
AND #$0F
TAX
LDA ?HEXTAB,X
?PUTCHR TAY
LDA $E407
PHA
LDA $E406
PHA
TYA
RTS
?HEXTAB .BYTE "0123456789ABCDEF"
.endif