European MSX2 - 60Hz mod

by snout on 02-10-2012, 11:47
Topic: Hardware
Languages:

On the Z80ST-Software Blog we found an interesting post about a hardware modification that makes European MSX2 computers boot in 60Hz (NTSC) mode instead of 50Hz (PAL). As a result, the enormous library of Japanese MSX games (including cartridges) and their music run at the correct speed.

The hardware modfication uses an EPROM that replaces the original system ROM, the detailed post explains which changes have to be made in the original (dumped) system ROM of a Philips VG8235 in order to make things work properly.

Even among European developers and composers, 60Hz seems to be the prefered default setting. As our current poll reveals, most MSX users are capable of running in 60Hz mode nowadays.

Relevant link: European MSX2 - 60Hz mod

Comments (14)

By Guillian

Prophet (3450)

Guillian's picture

02-10-2012, 12:30

You could also find interesting MultiBios in a NMS8245

By evulopah

Paladin (669)

evulopah's picture

02-10-2012, 13:12

But this is not something new. My 8250 has een modded rom for years now. I got it from an msx user in south africa. Made the deal on msx.org!

By Metalion

Paragon (1444)

Metalion's picture

02-10-2012, 14:53

I beg to differ, even if I am alone in doing so.
I do not prefer the 60Hz mode !
For me, the nostalgia factor is important.
The european MSX ran at 50Hz, so it is my default mode !

By Huey

Prophet (2675)

Huey's picture

02-10-2012, 15:27

Quote:

I do not prefer the 60Hz mode !

Thats ok. But all commercial software other than spectrum ports were meant to run on 60hz.

By AxelF

Champion (386)

AxelF's picture

02-10-2012, 15:47

I would rather prefer the way Nyrikki did it.
Change the sub ROM so that if H key is retained at startup,
the MSX goes to 60Hz, otherwise he remains at 50Hz.

More info in this topic

By Meits

Scribe (6446)

Meits's picture

02-10-2012, 17:07

My euopean MSX was modded as service by Repair Bas when he built me my computer. He suggested it on top of all the other mods. I like the idea...
So... The 2-left-handed Dutchies like me can just drive to Hoorn and have it done Smile

By Manuel

Ascended (18154)

Manuel's picture

02-10-2012, 21:31

I simply switched to 60Hz before starting my JP games... no HW mod needed...?

By snout

Ascended (15184)

snout's picture

03-10-2012, 00:00

And for cartridge-based software this would work how exactly? Wink

By mars2000you

Enlighted (5986)

mars2000you's picture

03-10-2012, 00:45

snout wrote:

And for cartridge-based software this would work how exactly? Wink

Make a dump and run the ROM with ROMLOAD (and its parameter to choose the VDP frequency).

By Meits

Scribe (6446)

Meits's picture

03-10-2012, 06:46

Or type it in the ldr of the cracked version...
But not having to type the whole 90's poke, vdp, _system is just nice. Just runit x.dsk.
If life can be made easier, then why just not do it

By evulopah

Paladin (669)

evulopah's picture

03-10-2012, 11:19

You lazy vdp(10)=vdp(10)and253 msx users...

The whole point here is that it is just charming using your original cartridges on a modded MSX so it boots @ 60 hz.

Cool

By NYYRIKKI

Enlighted (5875)

NYYRIKKI's picture

03-10-2012, 19:37

AxelF wrote:

I would rather prefer the way Nyrikki did it.
Change the sub ROM so that if H key is retained at startup,
the MSX goes to 60Hz, otherwise he remains at 50Hz.

More info in this topic

I also added this "H"-key feature to the "64K ROM"-version of MSX2+
http://www.youtube.com/watch?v=agTKARNLQk8

By Manuel

Ascended (18154)

Manuel's picture

03-10-2012, 20:49

snout: say what??

By snout

Ascended (15184)

snout's picture

03-10-2012, 22:13

Manuel: what evulopah says.