Date: 2004-06-10 08:03:11
Hi Jim, I'd be interested in the tool, exe or BIN fine (just send as private email). I wrote something like it for the XE1541 cable (IEC-CRO) available from my website. As useful as the signal traces my seem, the problem is decoding them into working routines. You are probably better off working from the C64 source code (or the 1541JD code). You'll find the sources here, and a snippet below. - Nick http://hem.passagen.se/harlekin/download.htm beq $fb44 .fb4f lda $b2 ; lower three bits of $dd00 stx $dd00 ; store %00100xxx in $dd00 bit $dd00 ; bit test bvc $faf0 ; branch is input clk=0 nop ; timing sta $dd00 ; store %00000xxx in $dd00 ora $dd00 ; read two first bits lsr a ; move right two times lsr a nop ; timing ora $dd00 ; read next two bits lsr a ; move right two times lsr a eor $b2 ; "trixx" to handle the lower three bits of $dd00 eor $dd00 lsr a ; move right two times lsr a eor $b2 ; "trixx" to handle the lower three bits of $dd00 eor $dd00 cpy $93 ; load/verify flag bne $fb83 ; branch if verify sta ($ae),y ; store loaded byte in memory -----Original Message----- From: firstname.lastname@example.org [mailto:email@example.com]On Behalf Of Jim Brain Sent: Tuesday, 25 May 2004 1:42 PM To: CBM Hackers Subject: A utility possibly of interest Adrian provided me with great logic captures from his homebrew logic analyzer, but lamented the app to display them. Since I need to pore over these to figure out JDos support, I wrote a utility to convert his raw data to Verilog VCD format. If someone is interested in the C source (5kB), let me know. The JDos TKSA command is shown in this screenshot of GTKWave, running on Linux: http://www.jbrain.com/Screenshot-GTKWave.png Jim -- Jim Brain, Brain Innovations firstname.lastname@example.org http://www.jbrain.com Dabbling in WWW, Embedded Systems, Old CBM computers, and Good Times! Message was sent through the cbm-hackers mailing list - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Your Engineering Solutions Provider http://www.orbeng.com.au/orbital/engineeringServices/engServices.htm - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - PLEASE TAKE NOTE: The contents of this email (including any attachments) may be privileged and confidential. Any unauthorised use of the contents is expressly prohibited. If you have received this email in error, please advise us immediately (you can contact us by telephone on +61 8 9441 2311 by reverse charge) and then permanently delete this email together with any attachments. We appreciate your co-operation. Whilst Orbital endeavours to take reasonable care to ensure that this email and any attachments are free from viruses or other defects, Orbital does not represent or warrant that such is explicitly the case (C) 2004: Orbital Engine Company (Australia) Pty Ltd and its affiliates Message was sent through the cbm-hackers mailing list
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