View Full Version : Is this Zed Blade MVS card a boot?

01-28-2008, 02:21 PM
Here I have a Zed Blade card which has these tiny MX chips on it. I think that the board is legit, but the roms are boots. Or do you think that this is a repaired card?



01-28-2008, 02:33 PM
Sorry to say but its a boot. No MX chips were ever used on any MVS game unless its a boot. Now sure what game the boards are from but some one on here can tell you. Even though its a boot I suggest taking some electrical tape and covering the Eprom windows with it.

01-28-2008, 03:11 PM
Itīs a boot.

MX chips are some kind of eprom, but I forgot the exact explanation for it.

01-28-2008, 03:20 PM
Those particular MX chips without the windows are flash chips, not EPROMs.

01-28-2008, 03:29 PM

First Zed Blade Boot I've ever seen..

01-28-2008, 03:39 PM
MX chips are some kind of eprom, but I forgot the exact explanation for it.

The 29 series of MX chips are Flash EEPROMs.

The biggest issue I see is the speed on the S1 chip...its rated at 200ns and may actually be reading faster but 150ns is the max as far as I understood it to work to spec. It may work but if you have problems with that cart you may want to replace your S1 chip with something a little faster. Personaly I keep all my roms at 120ns max and try for around 90-100ns when building homebrew carts.