MSX2 rom flash to start with 60Hz

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By evulopah

Paladin (669)

Аватар пользователя evulopah

30-11-2004, 14:23

And is there any possibility that more people can obtain this modified rom??? uche uche like me uche uche....

I posted it here before that I also like to play my original roms from Konami instead of cracked version but the 50hz mode is stopping me from doing it...

By jpgrobler

Master (154)

Аватар пользователя jpgrobler

30-11-2004, 15:54

Mail me.

If you want it on a eprom it is about 8 euro, postage included to The Netherlands. ONLY IF YOU OWN A MSX

j p g r o b l e r @ h o t m a i l < d o t > c o m

By Gradius2

Hero (641)

Аватар пользователя Gradius2

13-08-2012, 00:41

MSX begin japanese, hence 60Hz, always was meant as NTSC (60Hz) only.

By evulopah

Paladin (669)

Аватар пользователя evulopah

13-08-2012, 08:47

Well, that's an old post!!

But still enjoying my modified ROM Tongue

By SkalTura

Champion (356)

Аватар пользователя SkalTura

15-08-2012, 20:02

Jpgrobler: I know it's a very old post, but do you still have the ROM file for the 60Hz boot NMS8250 ??
I would love to have the file. I can write it to a chip myself... (is your email still the same ?)

Thank you in advance.

By meits

Scribe (6509)

Аватар пользователя meits

15-08-2012, 22:55

His last post is about a year ago now... Check Repair Bas... He made my MSX boot in 60Hz as well...

By NYYRIKKI

Enlighted (5939)

Аватар пользователя NYYRIKKI

16-08-2012, 00:06

This patch should not be hard to add even with very limited knowledge. All numbers are HEX and addresses are offset from ROM start.

NYYRIKKI wrote:

Needed modifications to NMS8250 SUB-ROM:

#0422: 8C,3E
#3E8C: CD, 3C, 06, DB, AA, E6, F0, F6, 03, D3, AA, DB, A9, E6, 20, C8, AF, 32, E8, FF, C9

Functionality:
While boot logo is displayed, push "H"-key down untill beep to start in 50Hz mode, otherways 60Hz mode will be selected.

If you want to change also boot logo to 60Hz, put 0 to #2B56

By NYYRIKKI

Enlighted (5939)

Аватар пользователя NYYRIKKI

16-08-2012, 01:00

SkalTura wrote:

do you still have the ROM file for the 60Hz boot NMS8250 ??
I would love to have the file. I can write it to a chip myself...

Step by step instructions:

- Download: http://www.msx.org/news/software/en/super-x-122-added-downloads
- Put it to disk and boot up your NMS8250
- Put the disk in and type:

BLOAD"SUPER-X.LDR",R{RET}_@{RET}
BT0#3-0,3FFF,0#4{RET}D422#4{RET}
8C3E{LEFT}{LEFT}{LEFT}{LEFT}{LEFT}{RET}{DOWN}{RIGHT}{RET}
{RET}{UP}CD3C06DBAAE6F0F603D3AADBA9E620C8AF32E8FFC9{ESC}
S#8250SUB.ROM,0#4,3FFF{RET}

- BURN IT!

By SkalTura

Champion (356)

Аватар пользователя SkalTura

16-08-2012, 09:06

Got the ROM files in my mailbox.... Thank you !!

By jpgrobler

Master (154)

Аватар пользователя jpgrobler

06-05-2015, 04:54

The 8250 and 8280 subroms seem identical
So this patch should work on 8280 as well?

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