Author
| MSX2 rom flash to start with 60Hz
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NYYRIKKI
msx master
Posts: 1499 |  Posted: October 13 2004, 22:36 |
Just to clear things out, this program IS free as far as I know, but it can't be uploaded to MRC as original author of the software is unreachable and therefore last update of the software has been done without permission...
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Avkooi
msx novice
Posts: 18 | Posted: October 13 2004, 22:39 |
Thank you NYYRIKKI!
Is that the only byte you have to change to get it to start the machine at 60 Hz? That is easy to change, I think... jpgrobler, can you change the romimage or do you prefer that I mail you the changed image?
And can you tell me how much (and how ;-) I have to pay you to burn/flash a new NMS 8250 sub(ep)rom and mail it to the Netherlands?
Thanks a lot to everybody!
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NYYRIKKI
msx master
Posts: 1499 | Posted: October 13 2004, 22:44 |
I was just wondering, that hmm... Maybe it is good idea to add some code.. Something like: Boot normally in 60Hz mode, but if "H"-letter is hold down while booting, use 50Hz instead...
Working of the code is easy to test with emulator...
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Avkooi
msx novice
Posts: 18 | Posted: October 13 2004, 22:57 |
If somebody can write that code, that is... And find space in the stuffed 32kB... But for now, just start at 60 Hz is more than good enough! And with the other magic line (vdp(10)=2 ;-) I can always switch after startup.
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NYYRIKKI
msx master
Posts: 1499 | Posted: October 13 2004, 23:03 |
Today I'm too lazy to start to do anything anymore, but tomorrow I can do that modification if you like.
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jpgrobler
msx lover
Posts: 117 | Posted: October 14 2004, 05:35 |
I'll change a single byte no problem, but if you code updated to dual boot 50 or 60hz you'll have to wait for NYYRIKKI to be less lazy!
Super-X also has a nice english manual and NYYRIKKI did some repaires to the code.
IT is a VERY NICE proggy!
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Avkooi
msx novice
Posts: 18 | Posted: October 14 2004, 09:19 |
Ok, than I wait for NYYRIKKI to do some wizardry on the subrom!
Thanks again!
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NYYRIKKI
msx master
Posts: 1499 | Posted: October 14 2004, 15:16 |
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
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NYYRIKKI
msx master
Posts: 1499 | Posted: October 14 2004, 15:37 |
Quote:
| Super-X also has a nice english manual
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Yes, BIG thanx to you!
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Avkooi
msx novice
Posts: 18 | Posted: November 29 2004, 10:35 |
Last week I recieved the modified rom from JP. Yesterday I plugged it into my 8250 and....
it works perfectly!
I can recommend this (the code from NYYRIKKI is somewhere in this forum-thread) to everyone who wants to play his (original ;-) roms on 60Hz!
Thank you very much for your time, NYYRIKKI and JPGrobler!
A very happy MSX user!
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NYYRIKKI
msx master
Posts: 1499 | Posted: November 30 2004, 13:05 |
Good to hear, note that this patch is anyway only for 8250.
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evulopah
msx addict
Posts: 455 | Posted: November 30 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...
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jpgrobler
msx lover
Posts: 117 | Posted: November 30 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
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