PC Engine Duo card

[Necromancer]

It is a bit odd Duo card has bigger circuit than Pro even though Pro has extra 64k RAM added on top of the total RAM needed for Arcade games.

It looks like they're roughly the same length (both leave room for the thumb grip area on the end), so it's just the width that's a bit less.  Presumably that's so the hump could be bonded directly to the bottom shell, lessening the stresses placed on the pcb itself.

[Bonknuts]

What Necromancer said. (To the tee). The Pro card has 256k of rom, and 192k of ram that the Duo card does not. The base 64k of ram from the original CD unit, is always on the system itself (sys card 1.0 to 2.x have no ram on the cards - only rom upgraded. i.e. code).

[imparanoic]

i wonder whats in the hump on a tennokoe bank card?

[imparanoic]

i wonder whats in the hump on a tennokoe bank card?

http://nonta6913.blog.so-net.ne.jp/2007-09-29

a battery!! cr2302 battery

[Johnpv]

2320 not 2302.

Finding one with the solder tabs on it is a royal bitch.  Let alone finding one with solder tabs in the same position as the OEM ones.