Timeline for What DOS games used Mode X as described by Michael Abrash?
Current License: CC BY-SA 4.0
15 events
| when toggle format | what | by | license | comment | |
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| Oct 22, 2022 at 10:51 | answer | added | Katastic Voyage | timeline score: 6 | |
| Mar 9, 2022 at 18:28 | comment | added | Michael Karcher | Commonly, the term "Mode X" is used for the addressing scheme (chain-4 disabled) and not related to a specifc timing / resolution. I've heard the term "Mode X" applied to all variations of VGA 256-color modes with chain-4 disabled with resolutions between 320x200 and 360x480. "Mode Y" specifically for 320x200 with no chain-4 addressing seems to be a term that is less wide-spread. | |
| Apr 13, 2020 at 16:37 | history | edited | Joe | CC BY-SA 4.0 | add link to the source material |
| Apr 13, 2020 at 16:31 | answer | added | knol | timeline score: 2 | |
| S Jan 31, 2020 at 16:53 | history | suggested | Ola Ström | Added a tag | |
| Jan 31, 2020 at 11:43 | review | Suggested edits | |||
| S Jan 31, 2020 at 16:53 | |||||
| Jan 30, 2020 at 7:38 | comment | added | user722 | @Luaan Both will probably work, at least on the analogue monitors of the time that didn't expect timings to be exact. | |
| Jan 30, 2020 at 7:24 | comment | added | Luaan | @Justme That might be an error in Abrash's code, or an error in the VGA manuals. The only way to know is to try the code, and see if it works - while keeping in mind that VGA cards at the time weren't exactly compatible (I remember we had to use something like five different versions of the VGA code for some trickery to get things to work right on every machine we had access to). | |
| Jan 29, 2020 at 21:33 | vote | accept | Carr | ||
| Jan 29, 2020 at 21:07 | history | became hot network question | |||
| Jan 29, 2020 at 20:58 | comment | added | Raffzahn | Somewhat related: Mode 13h vs. Mode X | |
| Jan 29, 2020 at 17:36 | comment | added | Justme | Coincidently, I recently found an off-by-two error from the Abrash's Mode X setting code by accident. Abrash's code sets vertical total lines registers to value of 525 lines as there should be 525 lines in total per frame. But according to several VGA register manuals, the registers needs to be set to total lines minus 2, or value of 523, to have 525 total lines per frame. Not a big deal, but the two extra lines slow down the refresh rate slighly when compared to 640x480 60Hz mode, while their timing parameters should be identical. | |
| Jan 29, 2020 at 16:24 | comment | added | Tommy | Mode X was supported by the Allegro games library — en.wikipedia.org/wiki/Allegro_(software_library) — leading to a plentiful supply of freeware games you've never heard of (including my own). Beyond that I can't think of anything that isn't already in Stephen Kitt's linked Moby list. Of those, Car & Driver was particularly impressive for me at the time, going up to something like 320x400 if memory serves, and being a 3d game so that really was just more detail, no negative side effects. | |
| Jan 29, 2020 at 13:44 | answer | added | Stephen Kitt | timeline score: 16 | |
| Jan 29, 2020 at 13:02 | history | asked | Carr | CC BY-SA 4.0 |