Your thoughts on the USB cartridge reader

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By jpgrobler

Master (155)

jpgrobler's picture

26-02-2003, 04:21

HI

I would rather see a pc connecting to the msx cartdridge slot via usb etc.
Many msx hardware is already emulated on the pc, can this not be interfaced to the msx?

Ex. emulate scc chip on pc whilst playing on real msx

etc.

JP

By Grauw

Ascended (8507)

Grauw's picture

26-02-2003, 15:13

as far as I understood, the current design only supports MSX game ROMs. This means Moonsound, IDE etc. will not work. I'd like to know your opinion on this, and perhaps hardware developers can comment and suggest possible designs.

That would be a shame. And I don't know if it would be really nessecary to support only memory. After all, the memory access and I/O access both use the same lines; the address bus and the data bus. The only difference is that while an I/O action is performed the IORQ pin is set while memory access uses the MERQ signal. Aside from that there is as far as I can understand no difference, so if memory is supported, it should in my eyes not be very difficult to support I/O aswell (which would be much cooler). Ofcourse it depends on the exact design of the USB-reader, but I don't think it would be very difficult. As I said, there isn't much difference between those transactions. Basically the same routines/logic could be used for it, with some subtle changes.

~Grauw

By Leo

Paragon (1236)

Leo's picture

26-02-2003, 22:24

It brings nothing new...It does not fill any need.
...
If you consider it as a first step to get full USB supoort on real MSX , then why not ...
But it wiuld be better to go directly for a USB interface that enables to plug printer, modems, mouse , web cam , etc on a real MSX.

By snout

Ascended (15187)

snout's picture

26-02-2003, 23:04

Leo - You're talking about the MSX USB interface.

The USB cartridge reader is intended for connection to non-MSX systems so that emulators can run ROM cartridges.

jpgrobler - I do not think ASCII will create a device that connects MSX to a PC to use the PC as (emulated) hardware. Face it, commercialy, the old MSX computers are not interesting anymore.

By Grauw

Ascended (8507)

Grauw's picture

26-02-2003, 23:22

And on the 'MSX next generation' so to speak which will not have a cartridge slot (too bulky and old etc.) you can use it to connect your old hardware to it.

~Grauw

By snout

Ascended (15187)

snout's picture

28-02-2003, 12:04

Yup, and that is the most important and interesting feature for us!

By Sander

Ambassador (1845)

Sander's picture

03-03-2003, 13:05

Hmm, don't know that. I mean, if this new device can emulate all the old hardware, why should you need a cartridge slot? Only for the cartridge games?

By Latok

msx guru (3694)

Latok's picture

03-03-2003, 14:00

Uh, yes?

By anonymous

incognito ergo sum (109)

anonymous's picture

03-03-2003, 18:19

Hmm, don't know that. I mean, if this new device can emulate all the old hardware, why should you need a cartridge slot? Only for the cartridge games?
That and devices like SCSI/IDE interfaces, floppy disk interface, centronics printer interface, etc etc etc... Basically all legacy stuff Tongue
Ofcourse a prerequisite for the devices I named is that I/O works.

By sunrise

Paragon (1091)

sunrise's picture

03-03-2003, 20:42

We must not confuse two things

1. The USB-rom cartridge-reader. I see that as an indepent device for someone who has original cartridges (games). If the cartridge is suitable for use with I/O we should ask someone in Japan cause we donot know that.

2. The device Sander meant is the all-in one chip and that is meant to replace all old devices you cannot get anymore or are nearly disappeared from market.
Such as the VDP FROM 9918 to v9990 hopefully , sound from psg till opl4 .
Also the z80 will be into that device etc.

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