Best MSX 1 Upgrade ?

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By Grauw

Ascended (10820)

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19-07-2022, 20:57

Pentarou wrote:
gdx wrote:

And you won't be able to load your Roms placed in folders since DOS2 won't work.

The new revisions of SDmapper have 1MB that can be used in RAM, MegaRAM or BOTH together (512Kb each)! Price is also very competitive, starting at 55 € here.

That’s real interesting, the new mode to split the memory solves my main issue with the original version. I see a wiki page is already available, great, I’ll be able to find it back if the topic comes up again (as it does often :)). I think for people who find the MegaFlashROM SCC+ SD or Carnivore2 too expensive and don’t need their extra features, or if they are out of stock, this can be a pretty good option.

I hope in time all suppliers will switch to this new design.

By Hit-Biter

Master (175)

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19-07-2022, 21:12

Seems im not the only user that thinks they are overpriced unfortunately. Ive asked for and got a refund via E-Bay/PayPal and am leaning towards a Carnivore 2 or MegaFlashROM SCC+ SD. Cant find any stock for these though and TBH they also seem overpriced. I may just end up going for a SD Mapper with 1Mb. Again overpriced for what it is but wasting £40 or so doesn't feel as bad as wasting £100+

By Manuel

Ascended (19678)

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19-07-2022, 21:32

The Maxiol Carnivore 2 was very reasonably priced when I got it.

By st1mpy

Paladin (947)

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19-07-2022, 21:37

The 1mb mapper comes to around £64 with the postage added.

By Hit-Biter

Master (175)

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19-07-2022, 22:00

Manuel wrote:

The Maxiol Carnivore 2 was very reasonably priced when I got it.

Seems its 100 euro now going by this website !

https://forum.maxiol.com/lofiversion/index.php/t5537.html

What were your experiences ordering and using this item from maxiol ?

I like that it has an injection molded cartridge housing rather than a 3D printed one. Contacts don't look like gold though :/

By Hit-Biter

Master (175)

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19-07-2022, 22:07

st1mpy wrote:

The 1mb mapper comes to around £64 with the postage added.

As ozzy Man says Yea but NAAA.

£65 for 1Mb RAM. Errr nope

By st1mpy

Paladin (947)

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17-09-2022, 16:41

I finally received the SDMMR 1024K!
I'm having problems getting it to work actually. I tried it on 2 machines (Yamaha CX5mII/128, and Panasonic A1-WX) and the behavior is the same.
Most of the time I just get a blue screen (dip switches 1:down, 2:down, 3:up, 4:up)
If I put the dip 3:down, it boots to MSX DISK BASIC. I don't see any boot up messages about the SDMMR (I think I'm supposed to see that). I think this dip configuration is with the ROM off, so I think the ROM might be corrupt.
I don't see the LED light up at all. It has a SD card inserted (the one that came with the purchase). And when I check the content of the SD card on PC it does contain files. I can't remember how but sometimes I do end up in MSX DISK BASIC when dip 3 is up, and if I do CALL FDISK with a new sd card inserted it just freezes.
The dip switches 1 and 2 works I think, as on the MSX boot screen I see different RAM sizes (64KB, 5??KB, 1088KB)

By CASDuino

Champion (358)

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17-09-2022, 17:39

If you look on here it tells you what the switches do.

https://www.msx.org/wiki/MetalGear2_SDMMR_1024K#Switches

By st1mpy

Paladin (947)

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17-09-2022, 18:18

That wiki page says

1: Hybride mode (512kB Memory Mapper & 512kB Megaram Mapper)
2: Memory Mapper mode only (1024kB)
3: Megaram Mapper mode only (1024kB)
4: Unused

The sticker that came with the SDMMR 1024 says

1. Select MM/MR
2. Mapper ON/OFF
3. Flash ON/OFF
4. Unused

also its not clear whether switch in up position is on or off.

By st1mpy

Paladin (947)

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17-09-2022, 18:23

Anyway, I tried all switch combos. I never see the "SD Memory Mapper/Megaram 1024K" boot screen.
I either get a blank blue screen freeze (I need to reset the machine), or goes into MSX DISK BASIC (not Nextor).
No LED. CALL FDISK either freezes or Syntax Error.

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