Talk:INES Mapper 150: Difference between revisions
From NESdev Wiki
Jump to navigationJump to search
(sorta) |
m (color dreams is a little more correct than gnrom because gnrom only canonically existed with 2+2 bits, while color dreams was 2+4) |
||
| Line 3: | Line 3: | ||
Is this like the difference between [[iNES Mapper 087]] and [[iNES Mapper 101]]/[[iNES Mapper 140|140]], where one is ordered as in the mask ROM and the other as it is presented logically to the program? --[[User:Tepples|Tepples]] ([[User talk:Tepples|talk]]) 21:07, 17 May 2014 (MDT) | Is this like the difference between [[iNES Mapper 087]] and [[iNES Mapper 101]]/[[iNES Mapper 140|140]], where one is ordered as in the mask ROM and the other as it is presented logically to the program? --[[User:Tepples|Tepples]] ([[User talk:Tepples|talk]]) 21:07, 17 May 2014 (MDT) | ||
: Sort of. Unlike m101, where its order is sensible (even if in disagreement with the ROM), both orders are pretty illogical for m150/243. Someone should check with Санчез, though. This mapper really feels like Sachen specifically designed it to be maximally annoying for cloners to implement using discrete logic (Two 74'74s, two 74'75s, two 74'138s, one 74'368, one 74'00), even though it only provides | : Sort of. Unlike m101, where its order is sensible (even if in disagreement with the ROM), both orders are pretty illogical for m150/243. Someone should check with Санчез, though. This mapper really feels like Sachen specifically designed it to be maximally annoying for cloners to implement using discrete logic (Two 74'74s, two 74'75s, two 74'138s, one 74'368, one 74'00), even though it only provides [[Color Dreams]] plus mirroring control. —[[User:Lidnariq|Lidnariq]] ([[User talk:Lidnariq|talk]]) 22:59, 17 May 2014 (MDT) | ||
Revision as of 05:13, 18 May 2014
Physical vs. logical ordering
Is this like the difference between iNES Mapper 087 and iNES Mapper 101/140, where one is ordered as in the mask ROM and the other as it is presented logically to the program? --Tepples (talk) 21:07, 17 May 2014 (MDT)
- Sort of. Unlike m101, where its order is sensible (even if in disagreement with the ROM), both orders are pretty illogical for m150/243. Someone should check with Санчез, though. This mapper really feels like Sachen specifically designed it to be maximally annoying for cloners to implement using discrete logic (Two 74'74s, two 74'75s, two 74'138s, one 74'368, one 74'00), even though it only provides Color Dreams plus mirroring control. —Lidnariq (talk) 22:59, 17 May 2014 (MDT)
