How do you remap the CA18Dett chip for a Z32 AFM?

[pulsar gtr]

HI,

I bought 300 ics of the 27c256 a while back and I never used them, if any one is interested in buying some let me know, I will give you a better deal than any one else.

Thanks,

Rafic

[biosehnsucht]

I was too braindead to remember what to call it at the time, you want a SPDT switch, and connect the address pin to COM and +5V to A and GND to B (or swap A and B, doesn't matter).

There's various sorts of SPDTs, probably even some push-button instead of toggle-switch ones, but as long as it is SPDT it'll work.

Actually best would be SPDT along with some other crap to anti-bounce the change but this will work.

[datsunboy]

uh.....is a SPDT just a normal toggle switch?if not...whats the difference?

[biosehnsucht]

well you can have a switch that is SPST which is the same as above, but no B terminalso for example you either feed it +5V or nothing (disconnected)hopefully the EPROM would have internal pulldowns to make a floating input on the address line fall to ground, which would work fine then, but no telling...you can get SPDT's in many flavors (push botton, toggle switch like the bottom of the pic, DIP switches, sliding switches..)

your typical on/off switch is a SPST switch .

[slw240sx]

i believe im using the 256 chip, i spent 40$ on chips that didnt except the programs.... and they made me wait 2monthes for nothing.. . . instead the chips i got for 50cent a peice work

go figure

[biosehnsucht]

the chips that didn't work, what are they? if they're UV-erasable types are you sure they were erased before hand?

[datsunboy]

so the correct switch is just anyone that works in the way of your diagram?I have more of those sort of switches lying around than 2 pin ones!......lol

[biosehnsucht]

haha yes, as long as it operates like that doesn't matter how it looks, other than how you want it to look.

[nab911]

Sorry to rehash an old thread but slw240sx, if yo ustill have those .bin files can you email me them at [email protected]Thanks!

[Vetal]

Guys, has anyone had problem with changing EPROM?I've tried to modify fuel maps and set speedlimiter to some 70mph just to check and there's no difference... Car runs like before... limiter doesn't work also... What am I doing wrong?