View source for MMC3 with CHR ROM and CHR RAM

'''MMC3 with CHR ROM and CHR RAM''' is an uncommon combination.

Apart from ''Pinbot'' and ''High Speed'', which use the [[TQROM]] board, this combination is used for games in the Chinese language, which need to mix [[wikipedia:Chinese characters|logographic characters]] arbitrarily.
They are thought to follow a similar strategy to ''Faxanadu'' and ''[[Super Bat Puncher]]'', reserving some CHR RAM for software-rendered text boxes.
No mapper other than [[MMC5]] has CHR ROM banks fine-grained enough to allow showing dialogue using Chinese characters with only CHR ROM and without prerendering each sentence, and unlike Japanese, Chinese cannot use the common shortcut of using only [[wikipedia:kana|phonetic characters]].
Some of these mappers differ only in the amount of CHR RAM that replaces CHR ROM.

All MMC3-like iNES mappers known to be used with CHR RAM are listed below:
{| class="tabular"
! Mapper || First RAM bank || Size of RAM || RAM mirrored?
|-
| [[iNES Mapper 004|004]] || 0 || 0 or 8* || Yes
|-
| [[iNES Mapper 074|074]] || 8 || 2 || No
|-
| [[iNES Mapper 119|119]] || 64, 192 || 8 || Yes
|-
| [[iNES Mapper 191|191]] || 128 || 2 || Yes
|-
| [[iNES Mapper 192|192]] || 8 || 4 || No
|-
| [[iNES Mapper 194|194]] || 0 || 2 || No
|-
| [[iNES Mapper 195|195]] || 0 || 4 || No
|}
<nowiki>*</nowiki> In iNES format, mapper 4 has CHR RAM only if CHR ROM is not present.

ROMs with the [[NES 2.0]] header specify the size of CHR RAM separately. Because the default size is ignored, the seven mappers collapse into four distinct behaviors:
; 004, 194, 195: CHR RAM starts at bank 0 and is mirrored only if there is no CHR ROM
; 074, 192: CHR RAM starts at bank 8 and is not mirrored
; 119: CHR A16 switches between CHR ROM and CHR RAM
; 191: CHR A17 switches between CHR ROM and CHR RAM

[[Category:MMC3 with CHR ROM and CHR RAM|*]]