S4 has stopped loading lib

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obsoletemachines
Posts: 1
Joined: 25 Jan 2017 10:30

S4 has stopped loading lib

Postby obsoletemachines » 15 May 2017 13:22

hi,
my s4 will no longer load library off a ROM and store it. in mask mode it can load Eproms and do checksum but i can't get it do anything else. I thought perhaps the SRAM (32x8) chip was bad and replaced it but still exhibiting the same behaviour.

Does the library go on to the SRAM Chip?

thank you

Dataman (Neil Parker)
Posts: 931
Joined: 10 Nov 2011 09:51

Re: S4 has stopped loading lib

Postby Dataman (Neil Parker) » 15 May 2017 13:45

Hello obsoletemachines,

Thank you for posting in our user forum. The S4 library is not stored in the user RAM but in a transient program area, this means that the full capacity of the RAM is available to the user (128K or 512K). Please reference the S4 user manual for more details (Page 5): http://www.dataman.com/downloads/dl/fil ... manual.pdf

It could be poor contact that is causing the problem with loading the library, please try locking down the library ROM in the S4 ZIF and then using your thumbs to slide the chip from side to side, effectively scraping the ZIF contacts with the legs of the chip. This is usually enough to clean the contacts and get the library to load.

All of the S4 libraries and a full device support list are available from our website here: http://www.dataman.com/dataman-s4-resources

If you have any questions, please do not hesitate to contact me.

Best regards,


Neil Parker
Dataman Programmers


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