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1,703 commits 3 branches 0 tags 5.5 MiB
Commit graph pcem/src/scat.c
Author SHA1 Message Date
SarahW
d5dbe302b5 Implement CPU clock control on SCAT. Patch from Greatpsycho. 2020-11-16 17:59:57 +00:00
SarahW
142301adbf Don't enable SCAT shadow RAM if SCAT configured for less than 1 MB of 
low memory. Fixes Hyundai Super-286TR with 1 MB RAM configured.
 2020-11-15 13:44:23 +00:00
SarahW
c8638b9b2b Added Samsung SPC-4620P. Patch from Greatpsycho. 2020-03-07 13:47:37 +00:00
SarahW
50e7de5214 Merge from trunk 2019-04-18 20:46:38 +01:00
SarahW
3c2dbf063e Remove unused and superfluous variables from mem.c. 2019-02-07 20:23:14 +00:00
SarahW
8dc7b2ef36 SCAT chipset improvements : 
- Implemented ROMCS enable feature.
- Fixed RAM write protect register setting wasn't properly applied.
- Implemented Encoded RAS mode emulation on 82C235 revision A and 82C386 chipset.
- Implemented of experimental memory bank interleaved addressing emulation on
  82C836 chipset and removed hardcoded memory configuration setting. KMX-C-02's
  BIOS now automatically detects DRAM configuration and set DRAM configuration
  register value correctly.
- Improved accuracy of 82C235 chipset's memory bank addressing. GW-286CT GEAR
  BIOS now set DRAM configuration register correctly when Dynamic Memory Resizing
  is enabled.
- Changed Award286 clone and Samsung SPC-4200P's chipset revision to rev A.
- SCAT revision D chipset now set high ROM mapping size to 128KB.
Patch from Greatpsycho
 2018-11-12 20:16:32 +00:00
SarahW
604dce908b SCAT improvements : 
- Improved ROMCS mapping on top address area.
- Changed SCAT chipset revision.
- DMA wait control state register is now writable.
Patch from Greatpsycho.
 2018-01-27 13:52:43 +00:00
SarahW
8b4ab935d2 SCAT fixes. Patch from Greatpsycho. 2017-10-16 19:42:31 +01:00
SarahW
9f2b58b7c4 Added new SCAT chipset machines - GW-286CT GEAR, Samsung SPC-4216P and KMX-C-02. Patch from Greatpsycho. 2017-10-11 20:56:33 +01:00
SarahW
f9bd0b844f More SCAT improvements. Patch from Greatpsycho. 2017-08-21 18:20:08 +01:00
SarahW
7ec1adb65f SCAT memory changes. Patch from Greatpsycho. 2017-08-01 13:53:13 +01:00
SarahW
8b433633c0 Implement port 0x70 NMI mask. Patch from Greatpsycho. 2017-07-19 19:35:01 +01:00
SarahW
7531b95e83 Fixed A20 reset issues. Patch from Greatpsycho. 2017-07-17 19:38:02 +01:00
SarahW
1d4c9ab4e8 More SCAT improvements. Patch from Greatpsycho. 2017-07-06 20:26:48 +01:00
SarahW
36a5e6364c More SCAT fixes. Patch from Greatpsycho. 2017-04-28 16:51:02 +01:00
SarahW
ee3a39b49b Implement shadow RAM at A000-BFFF and CPU waitstate control on the SCAT chipset. Patch from Greatpsycho. 2017-04-19 16:35:56 +01:00
SarahW
345f83cb2a Improvements to SCAT chipset (Award 286 clone). Patch from Greatpsycho. 2017-04-12 20:38:15 +01:00
SarahW
2b892d2a7a Fixed compiler warnings for Windows builds. 
Added -Werror to Windows makefiles.
 2017-04-11 19:34:41 +01:00
SarahW
a4f3b2013e Added AMI 386DX and MR 386DX models (both based on OPTi 495 chipset). AMI 386DX supports external cache, useful for with prefetch emulation. 
Also commit a few fixes required :
- Set EDX correctly on soft reset
- LOCK NOP is now treated as an illegal instruction
- Tweaks to FDC sense interrupt handling following FDC reset
 2016-11-27 21:53:13 +00:00
SarahW
c81a91fd72 Moved integer registers, PC and flags_* variables into new cpu_state structure. Reduces recompiled code size slightly, small speedup (1-3%). 2016-04-20 21:39:41 +01:00
SarahW
1fe6233d4c Fixed bug in SCAT A20 handling. Patch from Greatpsycho. 2016-04-17 15:40:44 +01:00
SarahW
9329a997cc Added Award 286 (using SCAT chipset). Patch from Greatpsycho. 2016-04-14 21:15:00 +01:00