Talk:UNROM 512

What is the iNES number for this? Do you need submapper numbers for one-screen mirroring mode and flashing configuration? What are the jumpers for configuring CHR RAM? --Zzo38 (talk) 06:30, 1 April 2014 (MDT)

Was planning on having this as iNES number 30. The flashing configuration is enabled by the iNES battery flag, and the one-screen mirroring is done by setting the four-screen mirroring flag. If the rom is using NES 2.0, then the non-battery backed CHR RAM field is used to specify how much CHR Ram is enabled.

As for the jumpers that configure the CHR Ram, there is 4 of them on the board. Two of them tie the respective CHR-RAM address lines to Vcc, and the other two tie the respective CHR Ram lines to the 377 outputs. Basically, for 8KB, both CHR-RAM lines are tied to Vcc, for 16KB, only one of them is tied to Vcc, and for 32KB, none of them are tied to Vcc. Caitsith2 (talk) 08:50, 1 April 2014 (MDT)