Please adding some prom N82s191CN3 , pal 20,16.., and uc.68705...many thanks

alfxgT56

Hello !

I need to copy prom and pal and 68705p3..

I come from try to read Pal20R8 and PAL16r6..the Gal20V8 and PALCE20V8 is about pin to pin compatible..but unable to read...some pin
is hard coded not soft like 20V8 i think this why this is not readable with the GAL algorithme . Please could you add the read and write algorithme for this chips to the T56..

And the

N82s191CN3 or CY7C291A  this same chip and this  is very very simple one ..like a uv rom 2k 8bit but not exactly same pinout...
i have view the 27c16 type etc but not same pinout ce an Adress Ax line).

Many thanks .. perhaps i can help ? or perhaps could you give the trick to be able to add myself new chip algorithm to my T56.

Have a nice days.

Thanks again.

admin

回复 1# alfxgT56

Pal20R8 and PAL16r6..and PALCE20V8 etc.
   These chips are old chips, and it is difficult to obtain programming algorithms from manufacturers. So there is no way to join yet.
If someone can provide these programming algorithms, we will be able to join support soon.

MS2532  TMS25L32  TMS2532A  MCM68766 TMS2516 TMS2564
N82s191CN3 or CY7C291A  

We are testing above, these chips require a relatively large VCC and VPP current.

alfxgT56

I have found old article of manual programmer for this type of chips i put the link here.
The language is french hope this can help anywhere.

http://www.retronik.fr/revues/radio-plans/1991/RP522_05-1991.pdf

see page 33 to 41.

Some guys make reader for some of the PAL with atmega uc.:

https://fjkraan.home.xs4all.nl/digaud/arduino/ppread/palread.html

webpage with many many pld information:
http://matthieu.benoit.free.fr/pld.htm


Thanks . Have nice day.

LevelBest

回复 2# admin


I too would be interested in the TMS2564 , 32, etc support.
I am attaching the datasheet with programming details.

Thanks

dr25

For the older bipolar PROMs such as N82s191CN3 or CY7C291A, only READ support is important to me. PROGRAM support can be left out.
A general reference of these chips can be found here: http://www.andysarcade.de/data/e ... ts/xref_bp_prom.txt . Datasheets can be found online.

For MC68705 series, some information can be found at the following URLs:
https://seanriddle.com/mc6805p2.html
https://seanriddle.com/mc68705p5.html
https://github.com/SandboxElectronics/MC6805P2_clone

In general, READ support is most important. If PROGRAM support is initially left out, that is acceptable.