Found these inside a non-working 71B

[Dave Frederickson]

(03-18-2018 01:03 AM)MikeSD Wrote:  Does this mod alone allow two 32k to be configures as a single 64K?

This is all that was required to mod an HHP module.

Quote:The programmer has a switch action to do that. I assume this is a photo of your programmer. That switch must factor into operation, which makes me think something else is required. Like adding or removing a ground to do either.

There is the cut trace, which we can presume was connected to VCC in order to set the LCIM bit in the module's config buffer entry. The switch drives the signal to either 6.5 or 0V, probably through some additional circuitry.

Dave