Talk:Master System emulators

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Widescreen is impossible for SMS[edit]

The Sega Master System only has 256x256 pixel layers for the background tiles and sprites, therefore, in contrast to the NES or Mega Drive, a Widescreen hack is impossible. This information should be added into the field for Widescreen Hack (One could gain 64px vertically, but there's probably noone interested in implementing that.)

TwoMBit is not cycle accurate[edit]

It claims to be, but most likely predates the latest VDP discoveries. In particular:

See the documentation by Mask of Destiny here. The VDP has a certain number of 'external slots' per line — these are when it will permit a CPU-directed memory access to occur. The net timing cost for the CPU to put a byte into video memory is: (i) a fixed delay; plus (ii) the variable amount of time until the next external slot. It *is not a fixed amount*.

However, check out TwoMBit's VDP.cpp: the one-two of initDelay() and updateDelay(), initiated by write_port_BE(...), apply a fixed cost to memory accesses of the worst-case access time.

TwoMBit therefore does not accurately model the real hardware.

Any one deviation is sufficient to establish the point, but I note also just from a cursory glance that it doesn't calculate sprite overflow as the raster runs, so will set that flag at the wrong time.

For these reasons, I have demoted its table entry from 'cycle' accurate to 'very high' accuracy. — Tommy (talk) 22:01, 2 March 2019 (EST)

Where's Exodus?[edit]

Why isn't Exodus on this page?

Does it support SMS? Couldn't find any SMS info with a quick look on the homepage. / Jpx (talk) 07:01, 30 June 2019 (EDT)


Mednafen can also emulate SMS, according to Mednafen.

Removal of the Genesis, CD, and 32X columms.[edit]

This page is about the Master System and Game Gear emulators. I would also suggest a name change to Master System/Game Gear emulators if people are ok with it. --LilShootDawg (talk) 09:52, 8 November 2019 (EST)

Dega Missing From List[edit]

While it may not be one of the best emulators, Dega has been around a very long time, has high compatibility/supports FM chip sound/meka save import/zip support/video recording, and is very easy to use so I'm surprised it's not in the list. I didn't like Meka and all its confusing complexities back in the early 2000s so I have usually always used Dega to this day. Thanks to your page I'm now trying out your recommended emulators and am impressed. However I still think Dega stands up well against them. It's got to be right up there as one of the easiest to use emulator. You just run the exe and load the game lol, as all the default options are the best ones. Even joystick support is just a matter or turning on an option without any manual configuring required (unless you want to). Most emulation sites seem to think Dega died in 2004 along with its website and that 1.12 was its last release however I've just discovered that Dega went opensource and continued for many more years until 2011 when it released a 1.16 release. Blake00 (talk) 06:37, 8 March 2020 (UTC)