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You can still learn or re-learn something every day🙂 I was trying to figure out why my 4050 BITMAP images were too bright on the 405x Emulator - but running the viewer on the same image on my 4052 and 4054A showed a lot more detail. I figured it out today - I had added a feature to the 405x...

@WaveyDipole updated his fork of the experimental 405x Emulator: He added these features: Added Fractional second resolution to @daver2 's original GPIB Device 2 RTC Added an icon on the top left of the emulator window to change the speed of the Emulator: 1x, 2x, 5x, 10x, 20x, 50x, 100x ...

During weeks of studying how my 4054A display worked so I could fix it - I ran across a Tektronix Tekniques Vol 5 No 3 article announcing the Option 31 Color Enhanced Dynamic Graphics Display. The article described three different colors: green for normal stored vectors, red for write-thru (or...

I saw posts on the Facebook BASIC Programming forum on various programs to calculate PI and decided to port one to Tektronix 4050 BASIC. Tektronix 4050 BASIC was introduced in 1975 with their 4051 vector graphics microcomputer. The 4051 and the second generation 4052 and 4054 targeted...

I have had a video issue with my 4054A since my last youtube video with my SVG image of the Back to the Future Delorean Time Machine on Nov 27 2023: One symptom of the issue is a bright orange spot in the center of the screen after two minutes of inactivity in the program or keyboard as...

Anyone want to try my Star Wars game Work-in-progress for 4051-4052-4054 with 4051 Fast Graphics or 4051 MaxiROM with Fast Graphics or 4052 R12 Enhanced Graphics ROM Pack or Jos Dreesens Multifunction ROM Pack with R12 ROM? This game was created in 1981 for the 4054 Option 30 Games tape that I...

Wow! 4052 computer for sale on EBAY - AS/IS in Garden Grove California for $399 https://www.ebay.com/itm/364641232800 I'll bet we can fix it for the lucky buyer.

Someone on the 4051 BASIC facebook group has a GPIB diagnostic ROM cartridge for the 4052/54. It tests the built-in GPIB interface by connecting this ROM cartridge with a cable to the built-in GPIB and calling the firmware . He is trying to preserve the two EPROM's. He was able to get a...

I rewrote the 4051, 4052, and 4054 service manual Calibration programs and combined each set of programs into a single file. I also added a User Definable Key menu on the top line above the calibration graphics. So the calibration instructions on User Definable Keys does not match my new...

This is the Tektronix 070-2840-03 Nov 1982 revision of the 4052/4054 Technical Data Service Manual to include the 4052A/4054A: http://dvq.com/tektronix/Tek_070-2840-03_4052-4054A_technical_data.pdf Pdf pages 142 to 175 have a LOT more detail on the ALU microcode than previous versions of this...

I've been working on a second generation Flash Drive for Tektronix 4050 computers. My goals with this Flash Drive 2.0 project: Add multi-channel audio for games like Asteroids - where there are background and foreground sound effects during game play Add multi-device GPIB support. My current...

My Tektronix 4054A with Option 31 Dynamic Color display has begun to exhibit a bright orange spot refresh brightness issue :( I'm a bit worried that I could burn the CRT. Issue: when I power on the 4054A, I now see a bright orange dot on the top of the screen - on the same line as the...

Seller indicates local pickup only - Buy it Now price $899 https://www.ebay.com/itm/235327839230

@daver2 I think adding Serial COMM to the 405x Emulator would be extremely helpful. It would allow your original 405x Emulator to be used to load and save ASCII programs or data using Serial (@40: ) commands as a second storage device. I currently have to use the 4054A serial interface...

I am intrigued with the Modern Vector Art on the Plotterfiles.com website that had the Jack O'Lantern Face. Thanks to @stepleton's post of a Jack O'Lantern Face that he had ported to run on his Tektronix 4006 Terminal - I checked out that site and was impressed by the number and variety of...

One of the Tektronix Service Notes I posted may have the solution to the long warm up time (about 15 min) on my 4054A with Option 31 Color Enhanced Dynamic Graphics CRT...

I'm a big Battlestar Galactica original 1978 TV series fan - and since Battlestar Galactica featured Tektronix 4051 computers on the Galactica bridge and featured vector graphics for the battle scenes, I wanted to develop my first Battlestar Galactica game - Cylon Attack! Here is a video of my...

My concept for a Tektronix 4050 gamepad interface is to use an Arduino with two 10-bit ADC to digitize an analog joystick and four I/O pins for four switches. The gamepad I have in mind is the Vectrex game controller which has an analog joystick and four buttons and uses a DB-9 connector. For...

As I was working on the Tektronix 4052R14 GPIB Enhancement ROM Pack powerup "incompatible" message, I discovered the 4052A/4054A ROMs contain five undocumented CALLs! These calls are located in the 16KB BASIC ROMs at address 0000-3FFF hex. The 4052 and 4054 have 64KB of BASIC ROM located in...

@GanjaTron encountered an error message from the Tektronix 4052R14 GPIB Enhancement ROM Pack when he tested @jdreesen 4052/4052 Multifunction ROM Pack on his Tektronix 4052 computer: https://forum.vcfed.org/index.php?threads/tektronix-4052-4054-multifunction-modules-available.76192/post-1326954...