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TI-99/4A Console Tester Preorder and Prototype stock online


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All,

 

I have opened up the pre-order and a separate item for the 3 prototype boards I have.  both are on my store

 

SHIFT838 Store

 

The prototype board works the same as the production board, no trace corrections or hand wired connections, there was just a bad value printed on the silkscreen for one of the capacitors.  The value said 1000uF instead of 1uF.

 

The preorder if you do not want a prototype or do not get in fast enough to get one will be open until 11/24/2024 and close at Noon CST on that day.  Components and PCBs will not be ordered until after the preorder closes.

  • Like 5

I'd like to buy one but UPS shipping to the Netherlands seems to be $256,- 

Why?

 

Oh ... I see now I have more choices, but the cost of shipping is more then the price of this nice device 😞

 

Edited by F.G. Kaal
  • Sad 1
6 hours ago, F.G. Kaal said:

I'd like to buy one but UPS shipping to the Netherlands seems to be $256,- 

Why?

 

Oh ... I see now I have more choices, but the cost of shipping is more then the price of this nice device 😞

 

I was hoping to get one too until I saw shipping cost to UK

On 11/9/2024 at 7:21 AM, F.G. Kaal said:

I'd like to buy one but UPS shipping to the Netherlands seems to be $256,- 

Why?

 

Oh ... I see now I have more choices, but the cost of shipping is more then the price of this nice device 😞

 

 

I think there is a shipping glitch in the system, and I have a ticket opened with the ecommerce developer of the software I use.  I'll run it on my side and let you know what it is, because what you saw is not right!

 

 

  • Like 1

There seems to be a shipping glitch with the software I am using for some reason, at least for everyone outside the US anyway.  I have a ticket opened with the developer of the ecommerce platform software.

 

for everyone outside the US, if my site is showing an expensive rate, please send me a private message with your full name and shipping address and I will get a quote on my side.  Don't want you to miss out.

  • Like 1
54 minutes ago, Tornadoboy said:

Think it could be adapted to debug 99/22 boards? That would make life a lot easier for people building them.

@Shift838 can answer this better, so don't quote me on it, but from what I seen on how this works it only uses RAM/ROM in the >E000 and up space,

 

So disabling one of the dip switches on the 99/22 to disable that section of onboard 16bit ram which the "console tester" sidecar is using, then his console tester should run just fine, by flipping switch RAM3 to off to disable the >E000 space.

 

The following is from the 99/22 github readme:

Quote

The DIP switch on the main board allows one to configure which bank areas are populated with RAM.

RAM0 enables RAM to addresses >2000-3FFF (Lo Memory Expansion) RAM1 enables RAM to addresses >A000-BFFF (Hi Memory Expansion) RAM2 enables RAM to addresses >C000-DFFF (Hi Memory Expansion) RAM3 enables RAM to addresses >E000-FFFF (Hi Memory Expansion) RAM4 enables RAM to addresses >8000-83FF (Normal TI Scratch Pad RAM)

Note that I have never actually tested off-board 8 bit RAM, so this is new territory and might need some debugging 😊
also on-board RAM is 16 bit – so all of those external RAM sources will be slower.

 

Edited by Gary from OPA
  • Like 1
22 hours ago, Gary from OPA said:

@Shift838 can answer this better, so don't quote me on it, but from what I seen on how this works it only uses RAM/ROM in the >E000 and up space,

 

So disabling one of the dip switches on the 99/22 to disable that section of onboard 16bit ram which the "console tester" sidecar is using, then his console tester should run just fine, by flipping switch RAM3 to off to disable the >E000 space.

 

The following is from the 99/22 github readme:

 

Gary is correct.

  • Thanks 1

I received PCBs today from the fabricator.  Still waiting on EPROMs but I built one of the production boards to make sure there were no errors during manufacturing to ensure it works and it does.  

 

I also utilized the PCB house new serial number feature on the silk screen for this run.

 

As you can see, I have quite a few boards to build.

 

IMG_2932.thumb.JPG.02d8b64c7eae4dc3c34c2ca1988d2c37.JPG

  • Like 6
  • Thanks 2

 

@Shift838, @JasonACT

 

 

I got a minute to play with my console tester.

 

I started with a console that I have used a good bit with no negatives. It had been off for about two week.

I installed the console tester and turned the console on, I left an EA cart plugged in.

 

The console test kicked in immediately. In the end I ended with the following LED pattern:

image.png.c58853a14fbd718c551c6bc34dc62a4a.png

The display just kept incrementing the checksum values - which were corrupt:

image.thumb.png.39db8c4ad274511753c77a15f1d1fb26.png

 

I powered down the console waited a minute, removed the E/A cart and powered back up.

 

This time, I came to the TI title bar.

 

I hit the load interrupt switch on the tester.

 

Testing started, I got the same LED pattern and pretty much the same screen.

 

This time after a while, the system rebooted and went back to the TI title bar.

 

  • Like 2
2 hours ago, dhe said:

 

@Shift838, @JasonACT

 

 

I got a minute to play with my console tester.

 

I started with a console that I have used a good bit with no negatives. It had been off for about two week.

I installed the console tester and turned the console on, I left an EA cart plugged in.

 

The console test kicked in immediately. In the end I ended with the following LED pattern:

image.png.c58853a14fbd718c551c6bc34dc62a4a.png

The display just kept incrementing the checksum values - which were corrupt:

image.thumb.png.39db8c4ad274511753c77a15f1d1fb26.png

 

I powered down the console waited a minute, removed the E/A cart and powered back up.

 

This time, I came to the TI title bar.

 

I hit the load interrupt switch on the tester.

 

Testing started, I got the same LED pattern and pretty much the same screen.

 

This time after a while, the system rebooted and went back to the TI title bar.

 

Which one do you think is corrupt? It's harder to read without the color coding that distinguishes >00 - >7F from >80 - >FF.

 

@Shift838, I think the manual has a typo for the System GROM 1 checksum: ">0911399" is too many digits.

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