When used with the Electron, JGH's New Plus 1 Support ROM Utilities work as listed in the User Guide. When used with the Master, MartinB's Utilities work just fine.
The board has been developed for Dave Moore (Arcadian) as a low cost Games Cartridge to be used at some of the shows he runs. As a result of trying to keep the costs down to an absolute minimum I'll be ordering more than Dave needs and I'll be making them available to everyone at just about cost price. You'll be able to order just a PCB (it will have gold plated edge connectors) or built PCB - both with a 3D printed case option.
The prototypes have one Mod. (see below for details) but work fine with the Mod. in place. They don't have gold plated fingers! I have 9 spare PCBs at £3.50 each which includes UK postage. I'll list the BOM and GAL file tomorrow. I can also provide a kit of parts or build them up if needed.
The Mod. involves cutting some tracks above the GAL placed in a way that makes hem easy to cut! Why . . . I read the datasheet (it's been a long time since I read it fully!) and followed these instructions:
Don't, as it seems to screw-up the operation of the device!The GAL16V8 input and I/O pins have built-in active pull-ups. As a result, unused inputs and I/O's will float to a TTL "high" (logical "1"). Lattice Semiconductor recommends that all unused inputs and tri-stated I/O pins be connected to another active input, VCC, or Ground. Doing this will tend to improve noise immunity and reduce ICC for the device.
I'll post the 'production' pricing as soon as it's available.