Hello everybody,
i searched google for a solution to my problem and came across these forums. i read some of the topics on problems with the 27xxx, but it didn't really helped me, so i hope you guys can help me out.
last week i ordered a Willem EPROM Programmer PIC BIOS PCB5.0E. Together with the 16bit adapter for the 42pin 27c322.
also i got myself 10x 27c322 eeproms
so far so good. got everything, i thought.
now when i burn to the chip it get's to 100% and then gives an error:
0x000000 chip 0x10 buffer 0xff
i used an external power supply 12v 1A
the dip switches are in the correct setting
the eeproms are empty, i've checked
what could possibly be wrong here?
i would very much appreciate some help on this.
i tried reading back the roms and it seems it only fills the rom with 04040404040404 etc..
also checked on the 32ZIF socket pin 1 = 12.67Volts and pin 32 = 5.21Volts
willem PCB5.0E and 27c322 error @ 100%
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Re: willem PCB5.0E and 27c322 error @ 100%
Check pin 13 OE/Vpp and settings to it.
When Vpp is off OE comes low. 040404 is basic reply when chip output not activ.
Place adapter without chip and check with Test H/W values on pin when Vpp on and off.
When Vpp is off OE comes low. 040404 is basic reply when chip output not activ.
Place adapter without chip and check with Test H/W values on pin when Vpp on and off.