So I recently acquired more Sachen games, among them are 31B-001 (Taiwanese version), 16B-002 (2x 8B with switch), the elusive 6B-001, which I guess is now confirmed to exist and an unknown 16B variant featuring the Mahjong titles and a wide selection of other titles, meaning it’s not just two… Read more »
Just wanted to let everybody know that finally, all Sachen 4 in 1 Mono games were dumped and put into DoM by yours truly. I would like to point out that taizou and BigFred lent a hand in letting me borrow their games.
So I noticed I neglected to update DoM with the mono 4B games I had already dumped. I did so now. All redumps are in as well as new entries for 4B-001, 4B-004, 4B-006, 4B-008. I updated the last Sachen post as well. Maybe a bit more info on color… Read more »
So I received more Sachen carts in the mail today and finally confirmed that Sachen’s MMC1 also has 8 high address lines, as could be guessed from the zero-adjustment being performed on all 8 data bits. Probably now going to change the dumper to read RB 0x00 from 0x4000-0x7FFF by… Read more »
Next week… Now you know how that worked out… Anyway, I was recently contacted on no-intro about an update on the Sachen dumps. And I thought why not share my current progress with the rest of the world 🙂 So, currently dumped physical media: 1B: — 001 – Beast Fighter… Read more »
So thanks to BigFred from no-intro, I got my hands on more Sachen cartridges. A few were mono cartridges, which I managed to dump using my 4B-007 code. Unlocking color cartridges, which are compatible with CGB as well as DMG works just fine in DMG mode. However, the internal mechanics… Read more »
This information is superseded, see Sachen Mappers. I thought I might as well update that within hours of opening my 4B-007 cartridge I managed to dump it. Basically, the mapper has at least four registers. Lock register: Whether the mapper is unlocked or not, see below 0x0000-0x1FFF: base ROM bank… Read more »
So I recently acquired a Sachen game, 4B-007 “4 in 1”. Of course, I had to open it somehow to look inside… Cartridges are a bit smaller than regular Game Boy cartridges and they lack a screw at the back. So with no easy way to open it and prying… Read more »