NINA-03

Board

Odd gloptop ROM board

Tech Specs:

Max. 32K PRG ROM.
Max. 32K CHR ROM.
74LS138
74LS175
MX8018-0002-A lockout replacement

Description:

This must be one of AVE's earlier carts, since out of all the AVE games I own, this showed up exactly once. It's compatible with the NINA-06 board, but only allows up to 32K of PRG and CHR, and uses their funky lockout chip.

There is only one register on this cart. It maps in kinda strangely.

4100-41FF, 4300-43FF, 4500-45FF ... 5F00-5FFF

7       0
---------
xxxx xxCC

C: Selects an 8K CHR ROM bank

CHR banks are unknown on startup.  Mirroring is hardwired on cart.