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  • nikola-wan's Avatar
    Today, 01:30 PM
    nikola-wan replied to a thread Midwest 6800 in Other
    DaveH, I'm going to try to get this MSI monitor program assembled and working on my Tektronix 4054A (change the ACIA address and RAM address)......
    12 replies | 919 view(s)
  • nikola-wan's Avatar
    December 7th, 2018, 08:00 PM
    I have just uploaded a new program to my Tektronix 4050 program archive site - an RPM Calculator program: ...
    23 replies | 3052 view(s)
  • nikola-wan's Avatar
    December 3rd, 2018, 07:42 PM
    oldmicros, I started a thread on a Tektronix 405x GPIB flash device: ...
    4 replies | 141 view(s)
  • nikola-wan's Avatar
    December 3rd, 2018, 04:45 PM
    Dave, Check out the Motorola MINIBUG 6800 assembler source code I posted in my github repo:...
    69 replies | 5840 view(s)
  • nikola-wan's Avatar
    December 2nd, 2018, 07:37 PM
    falter, I think it will be easier to just transfer programs into the board bucket from the PC on the second serial port. Monty
    69 replies | 5840 view(s)
  • nikola-wan's Avatar
    December 2nd, 2018, 04:58 PM
    Dave, Is the Tape using GPIB or serial on the Board Bucket? So a 4924 GPIB tape drive might work? or the older 4923 which used serial? Monty
    69 replies | 5840 view(s)
  • nikola-wan's Avatar
    December 2nd, 2018, 10:54 AM
    Maybe this company still has a working 4012: http://www.computerequipmentwarehouse.com/tektronix401540124115.html They also may still have a...
    157 replies | 4543 view(s)
  • nikola-wan's Avatar
    December 2nd, 2018, 10:51 AM
    Maybe that terminal is missing all the boards :( I think Al Kossow already posted that the big circular connector goes to a separate chassis with...
    157 replies | 4543 view(s)
  • nikola-wan's Avatar
    December 2nd, 2018, 10:49 AM
    falter, This Tektronix 4012 terminal might be the perfect accessory for your Board Bucket (although it doesn't have a tape drive) ...
    157 replies | 4543 view(s)
  • nikola-wan's Avatar
    December 2nd, 2018, 10:15 AM
    Typo in my Board Bucket translation of Brad's 4051 graphic program: Line 140 should be MOVE 70,5 Here is the new screenshot from running this...
    157 replies | 4543 view(s)
  • nikola-wan's Avatar
    December 2nd, 2018, 10:01 AM
    And here is my modification of Brad's program that I posted earlier with the scaling values divided by 10 and converted back to MOVE X,Y and DRAW X,Y...
    157 replies | 4543 view(s)
  • nikola-wan's Avatar
    December 2nd, 2018, 09:46 AM
    I did a compare of falter's Board Bucket Snoopy program listing including the latest DATA statements against my original Snoopy.BAS program - and...
    157 replies | 4543 view(s)
  • nikola-wan's Avatar
    December 2nd, 2018, 09:35 AM
    I just repaired my Tektronix 4054A computer - again. I had only replaced one of two big Sprague 420UF 200VDC electrolytic capacitors on the +5V...
    15 replies | 1633 view(s)
  • nikola-wan's Avatar
    December 2nd, 2018, 05:39 AM
    In the meantime, here is another graphics program to try - courtesy Brad Srebnik and his 4051 simulator: 100 SET DEGREES 110 PAGE 120 FOR A=0 TO...
    157 replies | 4543 view(s)
  • nikola-wan's Avatar
    December 2nd, 2018, 05:22 AM
    falter, we are getting very close. When I get back to my PC - I'll check the whole program - and double check the DATA statements I sent (they...
    157 replies | 4543 view(s)
  • nikola-wan's Avatar
    December 1st, 2018, 06:03 PM
    falter, I'm not sure what the DATA is in the previous post. Here is what you should use for the Snoopy picture: 9001 DATA...
    157 replies | 4543 view(s)
  • nikola-wan's Avatar
    December 1st, 2018, 05:34 PM
    falter, change your data statements to this: 9001 DATA "08317808216C08345D084659084269083C6D48465908585D08" 9002 DATA...
    157 replies | 4543 view(s)
  • nikola-wan's Avatar
    December 1st, 2018, 05:26 PM
    falter, try changing line 3260 to 3260 IF A>=64 THEN GOTO 3290 I just saw that you are having to manually reduce the line length to 64 or...
    157 replies | 4543 view(s)
  • nikola-wan's Avatar
    December 1st, 2018, 05:08 PM
    falter, I suggest deleting lines 3341 and 3342 as shown below. X and Y don't need to be scaled when they are sent to the Tektronix in 4012...
    157 replies | 4543 view(s)
  • nikola-wan's Avatar
    December 1st, 2018, 03:31 PM
    If the Board Bucket BASIC plot is supposed to work with a 4010 terminal - then the X and Y scaling is 1023 for full scale. The 4051 Move and...
    157 replies | 4543 view(s)
  • nikola-wan's Avatar
    December 1st, 2018, 11:43 AM
    The Wizard of IDD screenshot title says: Tektronix 4010/PDP11 Graphics Editor Tektronix made digitizing tablets: Tek 4956 and the bigger 4957...
    157 replies | 4543 view(s)
  • nikola-wan's Avatar
    December 1st, 2018, 06:43 AM
    Dave, I would like to see if the Board Bucket DDT or 4051 Assembler DDT can be ported to the 4052/4054 ROM entry points that we now know from the...
    157 replies | 4543 view(s)
  • nikola-wan's Avatar
    December 1st, 2018, 06:40 AM
    nikola-wan replied to a thread Midwest 6800 in Other
    falter, I did find some websites with interesting info and code that may run on your MSI! this site contains the recovered floppy images that...
    12 replies | 919 view(s)
  • nikola-wan's Avatar
    December 1st, 2018, 06:29 AM
    falter should be able to use a free PC comm program like RealTerm (see my instructions on the README on my github site) to directly transfer programs...
    157 replies | 4543 view(s)
  • nikola-wan's Avatar
    November 30th, 2018, 07:32 PM
    falter, Sorry, I meant Board Bucket - not bit bucket :) Monty
    157 replies | 4543 view(s)
  • nikola-wan's Avatar
    November 30th, 2018, 07:13 PM
    falter, Outstanding! I highly recommend you find a new old-stock 3M DC6250 tape on EBAY - I just looked and saw several auctions. The...
    157 replies | 4543 view(s)
  • nikola-wan's Avatar
    November 30th, 2018, 05:48 AM
    falter, Great progress! Section 6 in the 4051 Communications manual covers how to get the Tektronix into "Terminal Mode" which is described as...
    157 replies | 4543 view(s)
  • nikola-wan's Avatar
    November 29th, 2018, 04:33 PM
    falter, screen blank after a couple of minutes is normal documented operation to ensure the stored image will not burn into the phosphor. On...
    157 replies | 4543 view(s)
  • nikola-wan's Avatar
    November 29th, 2018, 05:45 AM
    falter, Yes the 4051 max serial speed is 2400 baud. The 4052/4054 max speed is 9600. The Graphics submode of Terminal mode of the backpack...
    157 replies | 4543 view(s)
  • nikola-wan's Avatar
    November 28th, 2018, 05:43 AM
    falter, Great progress! I'ts alive! I'll bet the graphics CALLs are in a ROM that is bank switched out to allow the ROM cartridges into memory...
    157 replies | 4543 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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