60 hz by default

By GUNMA747J

Supporter (13)

GUNMA747J's picture

14-12-2017, 15:04

as the title said,how can i switch the frequency from 50 hz to 60 hz by default?
please help

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By NYYRIKKI

Enlighted (4792)

NYYRIKKI's picture

14-12-2017, 15:45

MSX1: Change VDP to TMS9928 and replace related analog hardware.
MSX2 default mode to 60Hz: Change SUB-ROM offset #29FF to 0
MSX2 Boot logo to 60Hz: Change SUB-ROM offset #2B56 to 0
MSX2+ default mode to 60Hz: Change EXT-ROM offset #2C63 to 0
MSX2+ Boot logo to 60Hz: Change KANJI-BASIC ROM offset #3C9B to 0

By tfh

Paragon (1596)

tfh's picture

14-12-2017, 15:48

NYYRIKKI wrote:

MSX1: Change VDP to TMS9928 and replace related analog hardware.
MSX2 default mode to 60Hz: Change SUB-ROM offset #29FF to 0
MSX2 Boot logo to 60Hz: Change SUB-ROM offset #2B56 to 0
MSX2+ default mode to 60Hz: Change EXT-ROM offset #2C63 to 0
MSX2+ Boot logo to 60Hz: Change KANJI-BASIC ROM offset #3C9B to 0

I think he is using an emulator: https://www.msx.org/forum/msx-talk/emulation/frequency-problem
;-)

By NYYRIKKI

Enlighted (4792)

NYYRIKKI's picture

14-12-2017, 16:41

Oh, I didn't know Sad ... I'm so sorry... I hope he will be fine.

In this case I have to add few tips: Due to openMSX design after modifying ROMs you need to recalculate their SHA checksums and correct them in appropriate configuration file. Otherways openMSX will ignore your changes and use default versions instead.

In this special case I anyway want to suggest alternative resolution to the problem: Get your self together and buy an MSX from Japanese region!

By GUNMA747J

Supporter (13)

GUNMA747J's picture

23-12-2017, 15:10

many thanks

By Manuel

Ascended (13684)

Manuel's picture

23-12-2017, 23:42

NYYRIKKI wrote:

In this case I have to add few tips: Due to openMSX design after modifying ROMs you need to recalculate their SHA checksums and correct them in appropriate configuration file. Otherways openMSX will ignore your changes and use default versions instead.

Yes, that's the recommended way. If you don't like it, you can also override this by specifying the path and filename into the XML file, relative to that XML file.

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