From fc402d675bcd4b34fe563bd11e42159617ce7358 Mon Sep 17 00:00:00 2001 From: Damian Yerrick Date: Fri, 26 Jan 2024 09:11:12 -0500 Subject: [PATCH] README: DS also uses 15.7 kHz --- gameboy/README.md | 10 ++++++---- gba/README.md | 10 ++++++---- 2 files changed, 12 insertions(+), 8 deletions(-) diff --git a/gameboy/README.md b/gameboy/README.md index 1c6c73d..100c4d2 100644 --- a/gameboy/README.md +++ b/gameboy/README.md @@ -103,13 +103,15 @@ came to be called "240p" video. Some handhelds drive their internal LCD with System M-like timings. For example, the Game Gear's display has 144 active lines, which are centered in the 240p output of EvilTim's [Game Gear RGB] mod. -The Game Boy, on the other hand, uses an incompatibly slower 9.2 kHz -horizontal sync. Super Game Boy has to use a frame buffer to -convert the timing to 240p or 480i, which adds lag. This is why -the Game Boy port is renamed. +The Nintendo DS likewise drives 192 out of 263 lines at 15.7 kHz +according to [timings in GBATEK]. The Game Boy, on the other hand, +uses an incompatibly slower 9.2 kHz horizontal sync. Super Game Boy +has to use a frame buffer to convert the timing to 240p, which adds +lag. This is why the Game Boy port is renamed. [System M and System J]: https://en.wikipedia.org/wiki/CCIR_System_M [Game Gear RGB]: http://members.optusnet.com.au/eviltim/ggrgb/ggrgb.html +[timings in GBATEK]: https://problemkaputt.de/gbatek.htm#dsvideostuff Limits ------ diff --git a/gba/README.md b/gba/README.md index 1c26be5..f50b13a 100644 --- a/gba/README.md +++ b/gba/README.md @@ -88,13 +88,15 @@ came to be called "240p" video. Some handhelds drive their internal LCD with System M-like timings. For example, the Game Gear's display has 144 active lines, which are centered in the 240p output of EvilTim's [Game Gear RGB] mod. -The GBA, on the other hand, uses an incompatibly slower 13.6 kHz -horizontal sync. Game Boy Player has to use a frame buffer to -convert the timing to 240p or 480i, which adds lag. This is why -the GBA port is renamed. +The Nintendo DS likewise drives 192 out of 263 lines at 15.7 kHz +according to [timings in GBATEK]. The GBA, on the other hand, uses +an incompatibly slower 13.6 kHz horizontal sync. Game Boy Player +has to use a frame buffer to convert the timing to 240p or 480i, +which adds lag. This is why the GBA port is renamed. [System M and System J]: https://en.wikipedia.org/wiki/CCIR_System_M [Game Gear RGB]: http://members.optusnet.com.au/eviltim/ggrgb/ggrgb.html +[timings in GBATEK]: https://problemkaputt.de/gbatek.htm#dsvideostuff Limits ------