Metal Gear 1 DynamicVsync patch v2

by sd_snatcher on 08-03-2011, 00:46
Topic: Software

Answering the requests of the MSX community, sd_snatcher has improved the Metal Gear 1 DynamicVsync patch. New in this version:

  • TAB: throttle game speed
  • SPACE: speed up text dialogs, now works like Metal Gear 2 (the previous patch required you to alternate between pressing M and SPACE, which was awkward)
  • Automatically sets the VDP to 60Hz at boot, to play the game at the correct speed, even on European machines. If you have an old European TV that doesn't support this, hold down SELECT during boot to disable this.
  • Removed the annoying region lock. Now it's possible to play the Japanese version on non-Japanese machines
  • Enhanced sprite cycling: if you have a fast MSX (like a turbo-R), the sprite cycling routine will take advantage of that and the flickering of sprites will occur at a higher frame rate.
  • Improved graphics for the moving parts of the bridge. They now match the non-moving pieces better, resulting in a uniform visual.

Relevant link: Metal Gear 1 DynamicVsync patch

Comments (13)

By KdL

Paragon (1375)

KdL's picture

08-03-2011, 02:16

hi! Smile

two problems:

(a) interlaced mode is on at startup
(b) background is influenced by border color (eg. color,,7:setscreen)


By sd_snatcher

Prophet (3424)

sd_snatcher's picture

08-03-2011, 04:13

Hi KdL!

That's weird, it doesn't happen here.

- What's the SHA1 checksum of the ROM you're patching? Is it the correct one?
- What's your machine configuration? (maker, model, RAM, etc)
- What's the device you're loading the ROM? (MegaFlashROM SCC++, MegaRAM, etc) Or which program you're using? (trload, ExecROM, romload, opfx, megamu, etc)

By Vampier

Prophet (2381)

Vampier's picture

08-03-2011, 06:11

[like] button needed Smile

By Huey

Prophet (2662)

Huey's picture

08-03-2011, 10:22

[like] +1Running Naked in a Field of Flowers

By Rataplan

Master (241)

Rataplan's picture

09-03-2011, 08:07

great stuff. It's truly amazing to see a patch like this come out for a 1987 game, making it even better now than it was back then. Kudos!

By KdL

Paragon (1375)

KdL's picture

09-03-2011, 19:35

SHA is ok, those problems are from a test with various blueMSX machines (build 33879)

By sd_snatcher

Prophet (3424)

sd_snatcher's picture

10-03-2011, 21:23


Please try forcing the MegaROM type to Konami-8KB (no SCC) manually. Since the patched game isn't on it's database, blueMSX may be using the wrong megarom type.

By Samor

Prophet (2070)

Samor's picture

10-03-2011, 21:38

@Vampier... good idea... MRC could use a "like" or "twit" button.

By KdL

Paragon (1375)

KdL's picture

12-03-2011, 23:18

@sd_snatcher & dvik

- border color and flickering (turboR) are problems of blueMSX (build 33879) only!
- but interlaced mode is present using openMSX also.

Regards. Smile

By Manuel

Ascended (17501)

Manuel's picture

13-03-2011, 13:16

What if you try a more recent version of openMSX? (E.g. 0.8.1 which we released yesterday.)

By sd_snatcher

Prophet (3424)

sd_snatcher's picture

14-03-2011, 00:17


It seems your IPS patching tool is incompatible with this patch. Please try using UIPS to see if it solves the problem.

BTW, which patching tool did you used?

By KdL

Paragon (1375)

KdL's picture

17-03-2011, 02:22

Yes. IPS work fine. Smile

By mesiasmsx

Prophet (3254)

mesiasmsx's picture

08-03-2012, 12:54