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  • nikola-wan's Avatar
    Yesterday, 06:41 AM
    I scanned the 4052A/4054A BASIC and GPIB Enhancements manual from my 4054A Upgrade Kit: Tektronix 4052A/4054A BASIC and GPIB Enhancements...
    124 replies | 7592 view(s)
  • nikola-wan's Avatar
    June 16th, 2018, 07:39 AM
    Dave, Do you want me to post my 4054A upgraded ALU EPROMs? Drat - just checked and two of my captured images from 2000 are all FF's :( I don't...
    124 replies | 7592 view(s)
  • nikola-wan's Avatar
    June 16th, 2018, 07:32 AM
    Dave, I agree - 16, 16 bit registers but apparently they can be address as 32 separate byte registers using A and B selector? Here is my photo...
    124 replies | 7592 view(s)
  • nikola-wan's Avatar
    June 16th, 2018, 07:16 AM
    Dave, Looks like the 4052/4054 ROM packs are bank switched into the Low ROM space with jump tables for the ROM Packs in 4000 to 43FF according to...
    124 replies | 7592 view(s)
  • nikola-wan's Avatar
    June 16th, 2018, 07:12 AM
    Dave, In checking my 4052/4054 & 4052/4054A Technical Data Rev Nov 1982 - I found that Section 6 with the address map has the internal description...
    124 replies | 7592 view(s)
  • nikola-wan's Avatar
    June 16th, 2018, 05:54 AM
    All, I'm experimenting with my 4054A and really wanted to know how the EPROMS mapped into the address space. The 4052 Technical Data manual had a...
    124 replies | 7592 view(s)
  • nikola-wan's Avatar
    June 10th, 2018, 03:07 PM
    Dave, I believe I have good ROM images of my 4054A ROMs. I don't know if you want the individual ROM images, I used Hi-Lo Electronics ALL-100...
    124 replies | 7592 view(s)
  • nikola-wan's Avatar
    June 10th, 2018, 10:21 AM
    Dave, I realize that the schematics from Roland for the MAS are all the 4052A diagrams - here is my link to scans I just made of the 4052 MAS...
    124 replies | 7592 view(s)
  • nikola-wan's Avatar
    June 10th, 2018, 09:26 AM
    Al, My document link in my post on how I used the Data I/O to dump my ROMs will probably help you: Monty's document on how I used Data I/O to...
    20 replies | 589 view(s)
  • nikola-wan's Avatar
    June 10th, 2018, 09:20 AM
    Dave, I realize that the schematics from Roland for the MAS are all the 4052A diagrams - here is my link to scans I just made of the 4052 MAS...
    42 replies | 1643 view(s)
  • nikola-wan's Avatar
    June 10th, 2018, 05:09 AM
    Dave, I would love to look at your progress with the 4052 emulator - particularly your disassembly of the ROMs. Monty
    124 replies | 7592 view(s)
  • nikola-wan's Avatar
    June 10th, 2018, 04:46 AM
    Roland, When I tried typing CALL "EXEC" in my 4052 and 4054 it returned invalid CALL Statement :( According to the Tekniques blurb about the...
    124 replies | 7592 view(s)
  • nikola-wan's Avatar
    June 10th, 2018, 04:18 AM
    Oldcomputerexpert, I have loved your site for years. I did not have the Music program created by Tektronix, but heard about it from the Tek...
    20 replies | 589 view(s)
  • nikola-wan's Avatar
    June 9th, 2018, 06:38 AM
    Al, I think we do have some Tektronix 4924 drive service info. Check out the 4924 GPIB schematic page B-09-4924 (last page) of...
    20 replies | 589 view(s)
  • nikola-wan's Avatar
    June 8th, 2018, 05:50 PM
    I have finished wiring my Arduino Nano to a GPIB cable that I had previously wired to a PC LPT port in 2000 to try to communicate with the Tektronix...
    20 replies | 589 view(s)
  • nikola-wan's Avatar
    June 8th, 2018, 04:34 AM
    oldcomputerexpert, Ok - I found my 4907 cartridge ROM dumps - and document I made in April 2000 on how I did the dumps and some info I derived...
    19 replies | 1307 view(s)
  • nikola-wan's Avatar
    June 7th, 2018, 12:21 PM
    I started a separate thread to discuss my idea for a GPIB device for the Tektronix 4051, 4052/4052A and 4054/4054A computers to save and restore...
    14 replies | 840 view(s)
  • nikola-wan's Avatar
    June 5th, 2018, 05:52 PM
    Al, I checked and the drive I have is the 4923 - with a 25-pin RS-232 connector. One of the early Tekniques volumes mentioned that the tape...
    20 replies | 589 view(s)
  • nikola-wan's Avatar
    June 5th, 2018, 12:43 PM
    I don't know if I have that service manual - I'll check when I get home. I also have a 4924 tape drive - looking at the operators manual it says...
    20 replies | 589 view(s)
  • nikola-wan's Avatar
    June 5th, 2018, 07:50 AM
    MattisLind, I'm glad you would be interested. I have browsed your 4051 website many times :) Sounds like you should get your 4051 repaired - I...
    20 replies | 589 view(s)
  • nikola-wan's Avatar
    June 4th, 2018, 06:36 PM
    BloodyCactus, Thanks for the comments and link to the Galvant website. The GPIB connector is still available - just not called GPIB anymore. ...
    20 replies | 589 view(s)
  • nikola-wan's Avatar
    June 4th, 2018, 01:51 PM
    I totally agree - MicroSD is read/writeable on my PC SD card slot with a MicroSD to SD card adapter. I have an adapter from SanDisk and use it to...
    20 replies | 589 view(s)
  • nikola-wan's Avatar
    June 4th, 2018, 10:52 AM
    AJ, Cool videos - thanks for the suggestion of Plastibands. I just spent some time last weekend during repair of my Tektronix 4054 to rebuild a...
    12 replies | 445 view(s)
  • nikola-wan's Avatar
    June 4th, 2018, 08:16 AM
    Iím thinking about designing a GPIB FLASH DRIVE program storage accessory to our 4051/4052/54/52A/54A machines since the tapes are so problematic,...
    20 replies | 589 view(s)
  • nikola-wan's Avatar
    June 3rd, 2018, 12:05 PM
    Vipers program listing is in the emulator github programs folder. Tektronix 4051,4052,4054 AND Tek 4051 Emulator Viper Program link I’m...
    14 replies | 840 view(s)
  • nikola-wan's Avatar
    June 2nd, 2018, 08:24 PM
    I got my 4054 working today. Then I upgraded it to a 4054A - and it is still working!! See my post in my 4054 troubleshooting thread: Tektronix...
    124 replies | 7592 view(s)
  • nikola-wan's Avatar
    June 2nd, 2018, 06:25 PM
    Dave, I got my Tektronix 4054 working, then put in the upgrade kit (new ALU ROMs, new MAS board, new I/O board) to make it a 4054A - see my other...
    42 replies | 1643 view(s)
  • nikola-wan's Avatar
    June 2nd, 2018, 06:19 PM
    I followed the instructions in the upgrade kit: - removing the board assembly to replace the MAS and I/O boards - carefully removing the old ALU...
    14 replies | 840 view(s)
  • nikola-wan's Avatar
    June 2nd, 2018, 12:36 PM
    It was a 290V filter capacitor - should be 300uF, but showed 30uF. I didn't have the right size but put in a 250uF 250V capacitor - and my 4054 is...
    14 replies | 840 view(s)
  • nikola-wan's Avatar
    June 2nd, 2018, 07:14 AM
    one more post before I start troubleshooting again :) The difference in the upgrade kits is the I/O board. The F39 manual lists the 4052A new...
    42 replies | 1643 view(s)
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About nikola-wan

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About nikola-wan
Biography:
Used and loved the Tektronix 4051 at my first job in the 70's. PC hardware / firmware architect at Compaq, RLX, HP and now HPE.
Location:
Texas, USA
Interests:
I have a Tek 4052 and 4054.
Occupation:
Server management architect at Hewlett Packard Enterprise

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