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TI 99 - Hardware Identification needed

TI hardware identification strange

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#1 Schmitzi OFFLINE  

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Posted Sun Mar 1, 2015 8:39 AM

Hi 99ers,

 

I have found a "strange" module, maybe somebody knows something about ?

 

Thanks for all infos

Ralf

 

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#2 Ksarul OFFLINE  

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Posted Sun Mar 1, 2015 9:02 AM

It looks like it is another variant of the Heiner Martin Supermodul board (at least it is using that board layout for its starting point). With that initial identification, it is a GRAM module. If you look at the side of the board that isn't visible, you should find two groups of stacked memory chips (one of five 8K chips and one of two (the stack of two may possibly have a third chip that is a loader ROM)). The switch is to write protect the cartridge.

 

Nice use of a pair of eraser (rubber, for you Europeans) halves too. . .


Edited by Ksarul, Sun Mar 1, 2015 9:03 AM.


#3 Schmitzi OFFLINE  

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Posted Sun Mar 1, 2015 9:28 AM

Oh thanks a lot Ksarul,

I was a bit anxious to open the rest of the module, as the switch seems to "block" a bit.

But I will check that later.

Ralf


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#4 humeur OFFLINE  

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Posted Sun Mar 1, 2015 1:17 PM

look this

 

http://atariage.com/...-1418755195.jpg

 

 

Jean Louis



#5 Ksarul OFFLINE  

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Posted Sun Mar 1, 2015 1:56 PM

You're right Jean Louis--the homebrew TI Calc cartridge board you show there is done on the same Heiner Martin circuit card, with it just set up to use ROM instead of RAM.



#6 Schmitzi OFFLINE  

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Posted Sun Mar 1, 2015 2:15 PM

hmmm, I would prefer RUM  :)



#7 OLD CS1 OFFLINE  

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Posted Sun Mar 1, 2015 2:34 PM

hmmm, I would prefer RUM  :)

 

Too volatile for computer use.



#8 Flottmann1 OFFLINE  

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Posted Sun Mar 1, 2015 2:47 PM

have you  the 2 Eproms from TI-Calc and can upload it, would like to test my Heiner Martin Module

 

61owy7myz8nx.jpg

 

179wkfx99mx.jpg


Edited by Flottmann1, Sun Mar 1, 2015 2:48 PM.


#9 Ksarul OFFLINE  

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Posted Sun Mar 1, 2015 3:09 PM

Note that the one in that TI-Calc picture has been modified for a 256K EPROM, as it needs four ROM banks.



#10 Schmitzi OFFLINE  

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Posted Sun Mar 1, 2015 4:00 PM

have you  the 2 Eproms from TI-Calc and can upload it, would like to test my Heiner Martin Module

 

 

 

oh yes, feel free to upload as much as you can :)

 

ftp://u67140205-atariage:TeXasTI994A@toxic-instruments.com



#11 humeur OFFLINE  

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Posted Mon Mar 2, 2015 6:32 AM

My Heiner Martin Module is not standard the eprom emulation grom is 27c256 no 27c128.

I have no dump of this eprom.

 

Jean louis


Edited by humeur, Mon Mar 2, 2015 6:32 AM.


#12 Flottmann1 OFFLINE  

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Posted Mon Mar 2, 2015 8:12 AM

I also have a 256K Eprom-Modul

 

3563581sve4m.jpg

 

so9kc92lfrto.jpg

 

co8j5ktz68zp.jpg

 

here 'Cannonball Blitz'

 

zp76din52mid.jpg

 

 

from the German Magazine 'TI-Revue 5/85'

 

fg8bid1ivnu.jpg

 

msh2wmxnvikp.jpg

 

23nd6xcfv53d.jpg

 

8xvdiqw6lh9i.jpg



#13 mantadoc OFFLINE  

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Posted Thu Nov 10, 2016 9:35 AM

Hi 99ers,

 

I have found a "strange" module, maybe somebody knows something about ?

 

Thanks for all infos

Ralf

 

Did you try it Ralf ?



#14 Schmitzi OFFLINE  

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Posted Thu Nov 10, 2016 9:56 AM

nope :( Time is too tight to mention



#15 Ksarul OFFLINE  

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Posted Sun Mar 11, 2018 1:34 PM

I received the current issue of TIjdingen today. It had a notice in it that they recently found out that Heiner Martin had passed away on March 20, 2016 after a short but serious illness at the Uni-Klinikum in Ulm. Yet another of the folks who helped us get into the internals of the 99/4A is no longer with us. . .thanks to Beery Harmsen for the update!


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#16 Schmitzi OFFLINE  

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Posted Sun Mar 11, 2018 4:06 PM

sad thing :( one TI dinosaur less :_(  rest in peace



#17 FALCOR4 OFFLINE  

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Posted Sat Apr 7, 2018 9:32 PM

He was an inspiration and a pioneer for the 99.


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