Batboard

I have read on this forum and others that the orange label memory modules are supposed to be atmel 28c16's. I have over ten orange label MM that are SEEQ 14b01's. Are these equivalent? I also have several white label eeproms that ARE atmel 28c16's. I had read that the white label MM were not supposed to be reusable. Can anyone shed some light.

Many Thanks
Jack
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The orange modules have a 2816A eeprom in them.

The white label modules utilize a one time programmable PROM.

Andy Brinkley wrote:The orange modules have a 2816A eeprom in them.
The white label modules utilize a one time programmable PROM.

Again, I have several orange label MM with Seeq 14b01 eeproms. Are these equivalent?

So even though my white label MM have 28c16's you are saying they are only one time programmable......why is it that they are reusable in the orange label and not reusable in the white label if they are the same eeprom?

The white label modules were the early ones and originally came with a one time programmable prom. Apparently someone has swapped the OTP with a 2816.

The SEEQ eeproms are equivalent to a 2816A.

The R1801 will program a 2816A in an orange module, but will not program a 28C16 eeprom.

Andy Brinkley wrote:The white label modules were the early ones and originally came with a one time programmable prom. Apparently someone has swapped the OTP with a 2816.

The SEEQ eeproms are equivalent to a 2816A.

The R1801 will program a 2816A in an orange module, but will not program a 28C16 eeprom.

Thanks, that clears up my question.

Speaking of the r1801......Does anyone have a copy of the docs with the programming keystroke shortcuts? I know about "ctrl E" and "ctrl C" but figure there must be others.

Google totally failed to turn up anything useful about the SEEQ 14B01. This sounds more like a white label PROM part. The white label boards I have seen in the past had the chip soldered in (I do not remember the chip part number). So far, most orange label boards have had the chip socketed.

Don't forget the plastic housing with the white and orange labels can be removed and put back together with the wrong circuit board inside them. It could be more than just a chip swap if someone messed with the plastic.

The "14B01'" seem to me as Motorola marking rather than commercial.
So, "14B02" is the plain 24C01 eeprom chip,
and "14B06" is the MC14096BCP shift register.
In my small substitution table I made up, I don't have an entry for 14b01, so it can be any (memory) chip.


Paul

KR9Q wrote: Speaking of the r1801......Does anyone have a copy of the docs with the programming keystroke shortcuts? I know about "ctrl E" and "ctrl C" but figure there must be others.

The shortcuts depend on the program. A specific shortcut for one program might not work for another. It all depended on who wrote the program. Since you were talking about the Syntor X, try "CTRL F"... Finished inputting data & takes you to the programming step. Another (which is dependent on firmware version) is "CTRL X" which was a forced override for data that the program didn't want to accept. Unfortunately the latest version dropped this useful tool.