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  • 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 | 3042 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 | 137 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 | 5834 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 | 5834 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 | 5834 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 | 4515 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 | 4515 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 | 4515 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 | 4515 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 | 4515 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 | 4515 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 | 1629 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 | 4515 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 | 4515 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 | 4515 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 | 4515 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 | 4515 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 | 4515 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 | 4515 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 | 4515 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 | 4515 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...
    9 replies | 895 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 | 4515 view(s)
  • nikola-wan's Avatar
    November 30th, 2018, 07:32 PM
    falter, Sorry, I meant Board Bucket - not bit bucket :) Monty
    157 replies | 4515 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 | 4515 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 | 4515 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 | 4515 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 | 4515 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 | 4515 view(s)
  • nikola-wan's Avatar
    November 27th, 2018, 06:46 PM
    nikola-wan replied to a thread Midwest 6800 in Other
    Have you seen this 2008 thread on vcfed: http://www.vcfed.org/forum/archive/index.php/t-12816.html apparently the MSI 6800 may have used SWTPC...
    9 replies | 895 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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