I've got a combat cart I've pulled apart, and I'm looking at the card edge
connector.. also looking at the card edge pinout from the 2600 FAQ (which I
got somewhere on atarihq.org)... The FAQ says:
(Looking at the bottom of the cartridge -- i.e. edge connectors first)
Top
D3 D4 D5 D6 D7 A12 A10 A11 A9 A8 +5V SGND
--1- --2- --3- --4- --5- --6- --7- --8- --9- -10- -11- -12-
GND D2 D1 D0 A0 A1 A2 A3 A4 A5 A6 A7
When I took the cart apart, the chip side of the board was facing up, so
looking at the card edge with the chip side up, and looking at the pinout
for the ROM chip (from, um, Kevin Horton's web site, I think?), I see that
the chip's A11 line is wired to the card edge's A12 line, and the card edge's
A11 line doesn't even have a pin... what gives?
In fact, A0 thru A12 are present on the card edge connector... but this
would allow for 8K carts, without bank switching. So is the FAQ wrong?
I'm sure this has been discussed before on this list, I'm just trying to get
clarification.. I *need* to understand this fully, before I break out the
soldering iron.
Brian
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