Which pin goes were? SLROM and 27c1001

pinge80 · Post by **pinge80** » Mon Feb 08, 2010 1:37 pm

Another stupid question!

So far I understand that the nrom boards don't need any rewiring of the pins!

But now I´m planning on making a Mini-putt cart, both the chr and prg are 128kb.. so Im planning to use 27c1001 eproms!

I have a SLROM-06 board...
and found the following information...

SLROM (mapper 1):
PRG socket:
Bend up pins 1, 2, 24, 30 and 31 (or cut tracks)
Solder pin 2 to hole 24 (A16)
Solder pin 24 to GND (OE)
Solder pin 30 to hole 1 (A17)

What happens to pin32?
And hole 1 is were pin 3 ar going down right? Or am I supposed to desolder more than the 28holes that the old chip were in?
(I hope someone of you understand me)

CHR socket:
Bend up pins 1, 2, 22, 24, 30 and 31 (or cut tracks)
Solder pin 2 to hole 24 (A16)
Solder pin 22 to hole 31 (CE or CHR /A13)
Solder pin 24 to hole 2 (OE or CHR /RD)

what happens to pin 1 and 30?

Thanks! /Pinge

nintendo2600 · Post by **nintendo2600** » Mon Feb 08, 2010 11:18 pm

You leave them floating and don't do anything with them.

pinge80 · Post by **pinge80** » Tue Feb 09, 2010 4:47 am

ok, no problems, but why doesn't it say "bend up pin 32" then?

and thanks for the help

nintendo2600 · Post by **nintendo2600** » Tue Feb 09, 2010 10:32 pm

pinge80 wrote:ok, no problems, but why doesn't it say "bend up pin 32" then?

and thanks for the help

Cause pin 32 needs to go into hole 32 on the PCB. Pin 32 is 5v.