code is roughly based on Stephane Dallongeville's Gens.\r
#endif\r
\r
+PicoDrive is the first emulator ever to properly emulate Virtua Racing and\r
+it's SVP chip.\r
+\r
\r
How to make it run\r
------------------\r
* Some Sega/Mega CD games don't use Z80 for anything, but they leave it active,\r
so disabling Z80 manually (in advanced options) improves performance.\r
#ifdef GP2X\r
-* Sega/Mega CD: if FMV game performance is poor, try adjusting\r
- "ReadAhead buffer" to something like 2048K.\r
* When you use both GP2X CPUs, keep in mind that you can't overclock as high as\r
when using ARM920 only. For example my GP2X when run singlecore can reach\r
280MHz, but with both cores it's about 250MHz. When overclocked too much,\r
because they monitor state of this audio chip.\r
\r
@@2. "ReadAhead buffer"\r
-#ifdef GP2X\r
-This option is for dealing with slow SD card access in GP2X, which makes FMV\r
-games unplayable. It will allow emulator not to access SD card for longer periods\r
-of time, but it will take more time to fill the buffer.\r
-#endif\r
-#ifdef GIZ\r
-This option can prefetch more data from the CD then read by the game - not really\r
-useful for Gizmondo (this is a workaround for SD access problems on GP2X port).\r
+This option can prefetch more data from the CD image then requested by game\r
+(to avoid accessing card later), what can improve performance in some cases.\r
+#ifndef PSP\r
+"OFF" is the recommended setting.\r
#endif\r
\r
@@2. "Save RAM cart"\r
VDP: yes, except some quirks not used by games\r
YM2612 FM: yes, optimized MAME core\r
SN76489 PSG: yes, MAME core\r
+SVP chip: yes! This is first emu to ever do this.\r
+Some in-cart mappers are supported too.\r
\r
Sega/Mega CD:\r
#ifdef PSP\r
\r
* 32x is not emulated.\r
#ifdef PSP\r
-* SVP is not emulated.\r
+* SVP emulation is terribly slow.\r
#endif\r
* Various VDP quirks (window bug, scroll size 2, etc.) are not emulated,\r
as very few games use this (if any at all).\r
* A_SN for his gamma code.\r
* craigix for supplying the GP2X hardware and making this port possible.\r
* Alex for the icon.\r
+* Exophase and Rokas for various ideas.\r
* All the people from gp32x boards for their support.\r
#endif\r
#ifdef GIZ\r
\r
Changelog\r
---------\r
+1.40a\r
+ * Fixed a binding problem with up and down keys.\r
+ * Default game config no longer overrides global user config.\r
+\r
1.40\r
+ Added support for SVP (Sega Virtua Processor) to emulate Virtua Racing,\r
- wrote ARM recompiler and some HLE code for VR.\r
+ wrote ARM recompiler and some HLE code for VR. Credits to Exophase and\r
+ Rokas for various ideas.\r
* Changed config file format, files are now human-readable. Game specific\r
configs are now held in single file (but old game config files are still\r
- read).\r
- * Fixed a bug where some key combos didn't work.\r
- * Fixed a regression in renderer (rare graphic glitches).\r
- * Adjusted fast rernderer to work with more games, including VR.\r
+ read when new one is missing).\r
+ * Fixed a bug where some key combos didn't work as expected.\r
+ * Fixed a regression in renderer (some graphic glitches in rare cases).\r
+ * Adjusted fast renderer to work with more games, including VR.\r
+ * Fixed a problem where SegaCD RAM cart data was getting lost on reset.\r
+ * Greatly reduced SegaCD FMV game slowdowns by disabling read-ahead in the\r
+ Linux kernel and C library (thanks to Rokas and Exophase for ideas again).\r
+ Be sure to keep "ReadAhead buffer" OFF to avoid slowdowns.\r
+ + PicoDrive now comes with a game config file for some games which need\r
+ special settings, so they should now work out-of-the-box. More games will\r
+ be added with later updates.\r
+ + Files now can be deleted by pressing A+SELECT in the file browser.\r
\r
1.35b\r
* PSP: mp3 code should no longer fail on 1.5 firmware.\r
notaz.gp2x.de / libpicofe.git / blobdiff