[Coco] 24-pin ECB ROM Part #

[Al Hartman]

Extended Color BASIC 1.1 part number is: 8042364A

I have a 1.0, but not a 1.1. Sorry.

-[ Al ]-

-----Original Message----- 
From: Boisy G. Pitre
Sent: Wednesday, April 15, 2015 12:08 PM
To: CoCoList for Color Computer Enthusiasts
Subject: [Coco] 24-pin ECB ROM Part #

Hi everyone,

I resurrected an old CoCo 1 that was in one of my storage cabinets. It was a 
reject from a previous Fest that I picked up. After taking it apart and 
cleaning both the motherboard and case, then changing out some bad RAM 
chips, it’s purring like a kitten. I even replaced the old MC1741 op-amp 
with a newer TI one that allows me to now use DriveWire at 57.6K speeds like 
a CoCo 2.

The only thing that this CoCo 1 doesn’t have is Extended Color BASIC. The 
motherboard holds two 24-pin ROMs, one of which is Color BASIC. The other 
socket is empty.

Does anyone know the part number stamped on the 24-pin ECB ROM?


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