Here's the pics of the gateway 64.
Interesting they used a remanufactured N64 unit. My thoughts are they were putting this debug unit together and ran down to service to get a N64 without controller ports to use.
here's where 5v is grabbed for the controller box
Software running. You can run up to 14 N64's.
Roms are converted to .g64 files for use on the gateway
Using RTOOL I found that the gateway rom converter is simply byte-flipping the rom to a .v64 file structure. It also forms an information file .I64 for the associated rom. That seems odd for Nintendo, they usually use a .z64 file structure.
The on-board CIC can be changed and will successfully run roms with 6105 cic's. I added a stick of 32MB (already had 32MB onboard) from my IS-Viewer and ran zelda OOT debug rom (64MB). Within the readme file it states there is an optional CIC module but if you phisically change the cic it's not needed.
There is 4kbit and 16kbit eeprom for game saving on-board that can be purged with a program every time a new rom is loaded. You can also turn this off and game save data will be saved after power down.
SCSI is handled with a 68 pin wide SCSI connector. Termination is not needed, there is a dip switch that handles that for the system, located next to the expansion pack.
There are three versions of the gateway. Version 1.14 x and y and version 1.15 A. This was found within the readme file.
The gateway will not run without the brown connection connected at the controller port on the N64. So running this on another N64 would require wiring controller port 1 to the gateway. Also the controller requires the converter box in order to work. You cannot plug the controller directly into the gateway.