[Techtoolslist] midway 8080 ram test card instructions

[John Robertson]

That photo is of my old 8080 RAM test card that I posted somewhere years 
ago...I may have some printed info on the test somewhere. I have two 
cards one hacked and the other in good condition, but haven't seen them 
since I moved the shop last May - should be able to turn the cards up 
Monday though when I am back at the shop. Send me a note if I forget to 
post.

I did upload the ROM code to the TTL FTP site, look under /Midway/Ram 
Test, and I just uploaded some pictures showing more of the hacked card, 
and my good card in action. As I recall, and it has been years, the LED 
at C1 shows "h" or "L" for High/Low and the LEDs at B1 & A1 are the 
location. Maybe...

I also just uploaded to /Midway/Ram Test info on a Space Invaders test 
ROM that was dumped by Paul Sommers May 2001 and confirmed working by 
Chris Hardy. The code is different from the 8080 RAM test ROM image.

John :-#)#

On 2018/03/31 7:43 PM, davids at oz.net wrote:
> That picture is missing a cable that goes from the card to the first rom. And that’s all I know 😊
>
> Sent from my Windows 10 phone
>
> From: tonyhtbsusa
> Sent: Saturday, March 31, 2018 7:26 PM
> To: 'Technical Tools Mail List'
> Subject: [Techtoolslist] midway 8080 ram test card instructions
>
>   
>
>   
>
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> Anyone have the instructions for this 8080 ram test card
>
> http://arcarc.xmission.com/Test%20Equipment/Midway%20Ram%20Test%20PCB.jpg
>
> tony
>
> hi-tech arcade repair
>
>   
>
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