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Doubt about developing a 128kb MegaROM (ASCII 16K Mapper)

by albs_br on 02-11-2020, 13:48
Score: 554.87 %, Type: Forum topic , Comments: 12 comments
Segment switch for page 8000h-BFFFh (ASCII 16k Mapper)". I suppose there are other types of MegaROM ... the cartridge slot (and /WR is left disconnected). However in MegaROM there is a mapper IC on the cartridge ... switch for page 8000h-BFFFh (ASCII 16k Mapper)". I suppose there are other types of MegaROM ...

MGSP v2.0.0 a new music player by HRA!

by Pac on 03-02-2023, 14:37
Score: 147.78 %, Type: News post , Comments: 43 comments
https://twitter.com/thara1129/status/1349838689053024257?s=19 I have released the MGSP2.1.1 MegaROM Version For ASCII8K type and Konami8K type. ... tested.) MemoryMapperRAM 224KB (DOS TPA 64KB, MSX-DOS2/Nextor 64KB, MGSDRV 32KB, MGSP KFONT 64KB) ...

MSX 64k games ROM program

by mjnman on 20-11-2020, 15:18
Score: 180.25 %, Type: Forum topic , Comments: 23 comments
If you need more than 48KB of ROM, the wise decision is top go for an ASCII16 megaROM. It's ... This means that using a MegaROM has an additional advantage: cheap flash or EEPROM chips that can ... eprom. That's it. The alternativa could be megaROM. (Software) ...

Ninja Kun - Ashura no Sho - HAL Laboratory not working in sx1

by _ThEcRoW on 27-11-2020, 21:00
Score: 138.56 %, Type: Forum topic , Comments: 3 comments
megaroms? I can't remember but is it a rom game? Or disk originally. It is a rom cartridge and i ... as i'm doing the loading using the internal mapper of the fpga(ese scc). (Software) ...

Konami/ASCII mapper page switch latency

by Metalion on 29-11-2020, 12:23
Score: 275.96 %, Type: Forum topic , Comments: 4 comments
have no Original chips have no latency but it seems that some homemade mapper take a little time to switch page because I have seen megaroms modified just to add a small delay between pages switching. ... within a Konami/ASCII mapper ? There is no latency. The bank There is no latency. The bank ...

DIY 128k Cartridge help

by Jman on 13-12-2020, 02:51
Score: 139.16 %, Type: Forum topic , Comments: 11 comments
cant get MegaRom devices but i am looking for a single game cartridge experience. Many thanks ... cant get MegaRom devices but i am looking for a single game cartridge experience. Many thanks ... Hi Apologies if this has been asked before. I am wanting to build a ACSII 8KB mapper ...

Loading a ROM with Carnivore 2 and SofaRun

by mcolom on 28-12-2020, 19:14
Score: 139.67 %, Type: Forum topic , Comments: 1 comment
with. This megaROM is based on a Konami-4 mapper, and it works fine with all of the MSX1 and MSX2 ... and at some point it hangs. Srom detects correctly it's a Konami mapper on a OCM device. However, if I ...

MSXdev'21 is ON

by MSXdev Team on 14-05-2021, 21:30
Score: 167.15 %, Type: News post , Comments: 106 comments
the idea that it was allowed to make like a mega-rom last year. @tfh @tfh Minimum RAM: ... over-the-shelf components. Notwithstanding MSX1 MegaROM games, I believe the MSX started to get its own ... loading and full use of mappers. But maybe that's just me. I don't know about the other ...

Is rapid swapping of ROM pages OK or a problem?

by Uninteresting on 06-01-2021, 23:04
Score: 183.18 %, Type: Forum topic , Comments: 22 comments
of a MegaROM? A mapper like ASCII16 or ASCII8 should work just fine, they are simple mappers. Of course you need ... Sorry NYYRIKKI, but I don’t see the problem why you would discourage the creation of a MegaROM? A mapper ... loading time is at least 3x compared to loading to memory mapper... MegaROM is also not alternative ...

Idea/Proposal: ROM Headers for emulation

by Vampier on 11-01-2021, 18:43
Score: 136.08 %, Type: Forum topic , Comments: 56 comments
and these headers identify the mapper types. There are various mapper types for the MSX. Konami/KonamiSCC/ASCII8/ASCII16 being the most common ones for megaroms. MSX ROMs do not have headers and the emulator/sofarun has ... the information they need to configure the megaROM. And emulators can also benefit from complete information. ...
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