Most used/relevant mass storage devices for the MSX? (at present)

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Par Fabf

Master (222)

Portrait de Fabf

08-05-2014, 17:08

BEER202 is the cheapest and easyest to build IDE interface.
In France there are at least 20 built by me.
I also built one in a single EPM240 CPLD.

With MSXDOS2 support, it will be a really good product.
I can provide one if someone want to mod ROM for MSXDOS2 support. Wink

Par Prodatron

Paragon (1788)

Portrait de Prodatron

08-05-2014, 17:58

Very interesting stuff! Smile Hope I can get a PadialSD, just sent him an eMail.

Par sd_snatcher

Prophet (3134)

Portrait de sd_snatcher

09-05-2014, 00:37

I have a LPE-MMC-V8BKP and it's a fantastic device. Namely:

1) It's lightning fast. And it's very quick to compute the free space on FAT16 partitions.

2) Supports FAT16 natively. I guess it was the 2nd device to support that (OCM was the 1st).

3) Very easy to use. All the tools were coded by Kralizek and the SETUP tool in built-in the ROM. It's not only beautifully designed, but also very easy to format a card and get it running

4) It supports disk emulation without any inconveniences:

4a) Read/write support for all disks. To write protect a disk, just use the /W parameter.
4b) No special disk naming is required, no concatenation required, no defragmentation required. Just use your normal DSK images

5) Supports card hot-swapping

Kudos for Ramones (of Kralizek) for developing such impressive set of tools.

Note: The previous LPE-MMC-V6BKP had some hardware compatibility issues with many MSX models, but those were fixed in the V8 model.

Par Prodatron

Paragon (1788)

Portrait de Prodatron

09-05-2014, 00:48

@sd_snatcher: I am so glad, that Leonardo is still producing the PadialSD/MMC, looking forward to receive mine!
Regarding...
- card hot-swapping: that's a fantastic feature. I missed it a lot for the Sunrise (MegaSD does it, too, which is really cool)
- lighting fast: I wonder if it's as fast as Sunrise or MegaSD? Is pure 512 x LDI allowed for transfering one sector?
- the great thing is, that it works fine on 7MHz as I heard.

Par edoz

Prophet (2193)

Portrait de edoz

09-05-2014, 08:44

Yes! I also ordered one Big smile

Par Guillian

Prophet (3258)

Portrait de Guillian

09-05-2014, 09:50

sd_snatcher wrote:

1) It's lightning fast.

Prodatron asked it... MegaFlashROM SCC+ SD is faster.
AFAIK, LPE-MMC needs to do something like this for reading a byte:

	ld	a,(SD_DATA)
	ld	(hl),a
	inc	hl
	nop
	nop
	nop

MegaFlashROM SCC+ SD works with just a LDI.

sd_snatcher wrote:

And it's very quick to compute the free space on FAT16 partitions.

Nextor 2.0.3 computes free disk space even faster Running Naked in a Field of Flowers

sd_snatcher wrote:

2) Supports FAT16 natively. I guess it was the 2nd device to support that (OCM was the 1st).

Actually it aplies OKEI's FAT16 patch 'on the fly'. So probably it will have problems with RAMDISK.
Nextor has FAT16 natively implemented in the DOS2 kernel.

sd_snatcher wrote:

5) Supports card hot-swapping

But it does not update DOS2 buffers. So you could have problems when inserting a different card or the same with its content modified.

It could be nice a software upgrade to support both SD card slots (only one is operative right now) and support for SDHC cards (very common these days). Also, 4GB partitions would be nice.

Par konamiman

Paragon (1050)

Portrait de konamiman

09-05-2014, 10:11

Guillian wrote:

Nextor 2.0.3 computes free disk space even faster

At least include a spoiler alert first, man! Smile

Par NYYRIKKI

Enlighted (5425)

Portrait de NYYRIKKI

09-05-2014, 10:19

maxis wrote:
NYYRIKKI wrote:

Novatec ATA interfaces were relatively popular among DIY people.

Novatec produced 35 "SuperATA" controllers. However, that was the only run back then in 1997. It was never respined ever since.

However, Egor's BEER202 was reincarnated quite a lot of times by the hobbyists from 1995. IMHO, this is the simplest and the most popular/supported controller for MSX1/MSX2 among the DIYers around the globe.

Sorry, my bad... I was mixing these two... I just remembered that the design was made by Egor. :)

Par Grauw

Ascended (8614)

Portrait de Grauw

09-05-2014, 10:23

konamiman wrote:
Guillian wrote:

Nextor 2.0.3 computes free disk space even faster

At least include a spoiler alert first, man! Smile

Tell us more Smile. You found the magic trick?

Par konamiman

Paragon (1050)

Portrait de konamiman

09-05-2014, 10:31

Coming soon, please be patient. But there is no magic involved, just some code rewriting. Wink

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