Image Map Image Map
Tab Content
  • daver2's Avatar
    April 17th, 2018, 01:39 AM
    daver2 replied to a thread Tek 405x web-browser emulator in Other
    Good thinking about the diagnostic ROM/RAM (although disassembly is not a problem - as the emulator performs this on the fly). It would, however, be...
    90 replies | 2838 view(s)
  • daver2's Avatar
    April 16th, 2018, 12:20 PM
    NiKo, I sent you a PM last month regarding the DPS6. Are you picking up PMs? Welcome to VCFED Mike. Regards, Dave
    10 replies | 876 view(s)
  • daver2's Avatar
    April 16th, 2018, 12:10 PM
    daver2 replied to a thread Tek 405x web-browser emulator in Other
    Monty, I like the key graphics! Here is where I have got to on the 4052 emulator. I have added the extension instruction mnemonics to the table...
    90 replies | 2838 view(s)
  • daver2's Avatar
    April 15th, 2018, 02:49 PM
    daver2 replied to a thread Tek 405x web-browser emulator in Other
    It's getting a little late in the UK - so my mind is getting somewhat tired... Anyhow, I think I am at the point where the start-up code is...
    90 replies | 2838 view(s)
  • daver2's Avatar
    April 15th, 2018, 11:25 AM
    daver2 replied to a thread Tek 405x web-browser emulator in Other
    I have now added some checks to avoid writing to ROM. This is applicable for the entire ROM space and for the area of ROM in the RAM space. It now...
    90 replies | 2838 view(s)
  • daver2's Avatar
    April 15th, 2018, 10:47 AM
    daver2 replied to a thread Tek 405x web-browser emulator in Other
    You win the prize! I remember seeing that article in the past as well... Anyhow, I am progressing with the 4052 modifications to mc6800.js. ...
    90 replies | 2838 view(s)
  • daver2's Avatar
    April 15th, 2018, 07:42 AM
    Yep, Use an 8080 disassembler - and see if it throws a fit with some of the binary instruction patterns - then look-up those in the Z80 manual and...
    14 replies | 342 view(s)
  • daver2's Avatar
    April 15th, 2018, 06:54 AM
    I have never come across one either. That doesn't mean there isn't one tucked in a corner of the internet of course... If any of the 'Z80...
    14 replies | 342 view(s)
  • daver2's Avatar
    April 15th, 2018, 06:33 AM
    daver2 replied to a thread Tek 405x web-browser emulator in Other
    Here is a post of my code. This should save me typing... Where I was at was to now look at how the CPU (mc6800.js) code accessed the memory and...
    90 replies | 2838 view(s)
  • daver2's Avatar
    April 15th, 2018, 06:05 AM
    daver2 replied to a thread Tek 405x web-browser emulator in Other
    >>> P.S. If you guys know a way to list a SECRET file, let me know... I think Roland has laid down a challenge :-)! I'll have a look at the...
    90 replies | 2838 view(s)
  • daver2's Avatar
    April 15th, 2018, 12:08 AM
    daver2 replied to a thread Tek 405x web-browser emulator in Other
    I got as far as looking at the 64K RAM / 64K ROM memory map. Of course (true to form) the 64K RAM also contains 'overspill' ROM! The mapping...
    90 replies | 2838 view(s)
  • daver2's Avatar
    April 12th, 2018, 06:45 AM
    daver2 replied to a thread Tek 405x web-browser emulator in Other
    That's fine by me. Dave
    90 replies | 2838 view(s)
  • daver2's Avatar
    April 9th, 2018, 10:48 PM
    No typo. Dwight, I am doing an 8008 emulator. I just wanted to explain to the OP the fun and games I am having and what to look out for with their...
    30 replies | 952 view(s)
  • daver2's Avatar
    April 9th, 2018, 01:23 AM
    +1 for Chuck's post regarding the flag setting code. I have written a number of emulators also (some of which are in commercial products) - and this...
    30 replies | 952 view(s)
  • daver2's Avatar
    April 8th, 2018, 08:34 AM
    daver2 replied to a thread Tek 405x web-browser emulator in Other
    Nice work you guys :-)! Dave
    90 replies | 2838 view(s)
  • daver2's Avatar
    April 6th, 2018, 02:55 AM
    daver2 replied to a thread Tek 405x web-browser emulator in Other
    A few minutes between finishing one spreadsheet and starting another... FDUP - possibly duplicating what is on the floating point stack? FSWP -...
    90 replies | 2838 view(s)
  • daver2's Avatar
    April 5th, 2018, 08:06 AM
    daver2 replied to a thread Mod8 in Other
    Not had much to do today - so working on the MIL a bit... I have a spreadsheet deailing the pinouts of each card - so I can pretty much see how...
    5 replies | 378 view(s)
  • daver2's Avatar
    April 4th, 2018, 10:38 PM
    daver2 replied to a thread Mod8 in Other
    I thought you would have parts of the MIL somewhere Falter! If you ignore the EPROM programmer part of the 'motherboard', I wonder if the rest of...
    5 replies | 378 view(s)
  • daver2's Avatar
    April 4th, 2018, 07:54 AM
    daver2 replied to a thread Mod8 in Other
    I am in for a MOD-8... Dave
    5 replies | 378 view(s)
  • daver2's Avatar
    March 28th, 2018, 01:16 PM
    Can you post some photographs or a video somewhere so we can have a look? Dave
    5 replies | 208 view(s)
  • daver2's Avatar
    March 23rd, 2018, 02:33 PM
    daver2 replied to a thread Tek 405x web-browser emulator in Other
    Sorry I haven't been replying to e-mails. I have just been too busy with work :-(. Roll on retirement! Unfortunately, they are paying me lots of...
    90 replies | 2838 view(s)
  • daver2's Avatar
    March 23rd, 2018, 02:21 PM
    daver2 replied to a thread Nascom in Other
    You're still moving forwards with it... I am slowly getting round to making a Compact Flash interface for the parallel port. Just about finished...
    185 replies | 8472 view(s)
  • daver2's Avatar
    March 23rd, 2018, 02:14 PM
    >>> There's also someone else selling MK14 PCBs which are made in the modern style, green, with solder resist and laid out to use keyswitches only. ...
    19 replies | 803 view(s)
  • daver2's Avatar
    March 23rd, 2018, 02:07 PM
    daver2 replied to a thread Tek 4051 startup sequence in Other
    Sorry for the delay in replying. Just got back from a business trip... Service Manual Vol 2. Page 3-2 shows the general wiring diagram between...
    19 replies | 983 view(s)
  • daver2's Avatar
    March 23rd, 2018, 01:56 PM
    daver2 replied to a thread PDP-11 RLV12 Hack in DEC
    But then everyone could do it! Where's the fun in that :-)! Well done for getting a running system again... Next problem? Dave
    50 replies | 2119 view(s)
No More Results
About nockieboy

Basic Information

About nockieboy
Location:
UK - Kent

Statistics


Total Posts
Total Posts
229
Posts Per Day
0.67
General Information
Last Activity
March 21st, 2018 10:07 AM
Join Date
May 12th, 2017
Referrals
0

1 Friend

  1. daver2 daver2 is offline

    Senior Member

    daver2
Showing Friends 1 to 1 of 1