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fc53fceda729ce8ec9c007292d54e3e75c3cfc07
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468 Commits

Author SHA1 Message Date
OBattler
fc53fceda7 Added AMD K6-2+ and K6-III+ 3DNow! DSP Extensions. 2022-11-06 04:50:13 +01:00
OBattler
2a2276dbee On the NEC V20/V30, REP string instructions with segment override move IP back one further byte on a hardware interrupt, fixes V20 detection on HWiNFO16. 2022-11-03 01:04:21 +01:00
OBattler
19d6fcec24 808x flags fixes - fixes HWiNFO v2.2 hanging. 2022-11-03 00:14:31 +01:00
plant
c80d2a0209 Fix CPU-Z on IBM 486 
It turns out that the IBM 486 does indeed have the AC bit in EFLAGS, based on CPU-Z detection behavior.
 2022-10-31 00:12:39 -06:00
Miran Grča
c2402daf1e Merge pull request #2755 from jriwanek-forks/tabstospaces 
Correct many file headers to show 86box
 2022-10-29 17:06:18 +02:00
OBattler
535b19a027 Do not raise CPU trap if an exception has occurred, fixes #2577. 2022-10-28 04:12:31 +02:00
OBattler
cb13ca526a Handle trap first also on interpreter - makes retf.exe at least run. 2022-10-28 03:27:35 +02:00
OBattler
079bec06eb Added segment limti checks to CPU instruction FFh, fixes #2583. 2022-10-28 03:07:48 +02:00
Jasmine Iwanek
f49d3c7458 Correct many file headers to show 86box 2022-10-27 17:08:58 -04:00
OBattler
bff5026b8b One last attempt at a fix to my own GPF handler. 2022-10-27 04:10:16 +02:00
OBattler
605929fcba Fixed V20 / V30 MUL flags - OpenXT now correctly detects the V20. 2022-10-26 17:02:52 +02:00
OBattler
e6321d952a More V20/V30 fixes. 2022-10-26 16:45:17 +02:00
OBattler
ec42ab69e1 Corrected the NEC V30 package to the correct 8086. 2022-10-26 02:47:39 +02:00
OBattler
a2d0ed214e Some NEC V20 fixes. 2022-10-26 02:46:40 +02:00
OBattler
787a6b81f7 Fixed warnings in cpu/808x.c. 2022-10-24 02:03:04 +02:00
Jasmine Iwanek
45e01ea3b8 Fix build 2022-10-19 19:20:49 -04:00
Jasmine Iwanek
51f84ce0be Merge remote-tracking branch 'upstream/master' into nec-v20 2022-10-19 16:24:10 -04:00
plant
8a53754b97 fix 95/98FE on P6 
loop should decode into 4 alu ops instead of 1
 2022-10-17 19:28:46 -06:00
Jasmine Iwanek
ece9f7ec72 Fix some compile warns while I'm at it 2022-09-21 19:27:08 -04:00
Jasmine Iwanek
b4673117fd Some clang-formatting in src/cpu 2022-09-20 01:00:45 -04:00
Jasmine Iwanek
05697fe355 Remove some cruft 2022-09-13 08:15:03 -04:00
Jasmine Iwanek
8904fd675f Use MD_FLAG 2022-09-13 08:10:24 -04:00
Cacodemon345
62fc657466 Even more i8080 work (#20) 2022-09-11 01:47:13 -04:00
Cacodemon345
54bc9dc58c 808x: Make sure all 8018x opcodes are marked as handled (#19) 2022-09-10 05:39:39 -04:00
Cacodemon345
2cdc63e83a 808x: Switch to __builtin_parity for parity flag setting 2022-09-10 14:53:00 +06:00
Cacodemon345
fc2fac4c73 More i8080 + NEC changes (#18) 
* More i8080 changes

* Fix compilation

* More foundational i8080 work

* Switch to __builtin_parity for parity flag setting

Fix some incorrectly implemented instructions
 2022-09-10 04:50:50 -04:00
Cacodemon345
13f5a2794f Prepare the structure for upcoming actual i8080 emulation (#16) 2022-09-08 16:28:51 -04:00
Cacodemon345
c2cc656103 Fix NEC BCD instructions (#15) 2022-09-08 14:26:05 -04:00
Cacodemon345
25b2e16a27 NEC INM/OUTM instructions (#14) 2022-09-07 15:58:42 -04:00
Cacodemon345
7b29c30819 Implement immediate IMUL operands (#13) 
* Implement immediate IMUL operands

Implement PUSH segment underflow behaviour on SP = 1 values for 8018x

* Limit bit-shifts and rotates to 31 on Intel 8018x

* NEC/8018x ENTER/LEAVE instructions

* NEC/8018x bound checking instruction
 2022-09-07 08:50:30 -04:00
Cacodemon345
2b0dff2ec6 Implement immediate versions of PUSH operations (#12) 
Implement immediate versions of bit-shifting operations

Make word read/write operations not overflow when offset is 0xFFFF on 8018x
 2022-09-06 16:59:39 -04:00
Cacodemon345
3dbfcf1fd3 NEC SUB4S and CMP4S instructions (#11) 
* NEC SUB4S and CMP4S instructions

* Return to original IP properly in case of POP PS

* NEC REPC/REPNC instructions

* Make NEC BRKEM instruction a fatal for now

* Fix wrong segment addresses in some NEC instructions
 2022-09-06 12:29:54 -04:00
Cacodemon345
e93cd46c78 NEC ADD4S instruction (#10) 2022-09-05 16:27:09 -04:00
Cacodemon345
323f7e7a62 NEC INS/EXT instructions (#9) 2022-09-05 06:18:10 -04:00
Jasmine Iwanek
cc72ab21e8 Some missing bits 2022-09-04 17:11:14 -04:00
Jasmine Iwanek
03bf62cccf Temporary for testing 2022-09-04 16:02:52 -04:00
Cacodemon345
199bbed5ee NEC CLR1 instructions (#8) 
Wraps up the fixed bitfield manipulation instructions
 2022-09-04 16:00:29 -04:00
Cacodemon345
2280685526 NEC SET1 instructions (#7) 
Mask the bit argument properly
 2022-09-04 15:50:38 -04:00
Cacodemon345
db6eac6e2f Mark recently-added instructions as handled (#6) 2022-09-04 15:38:42 -04:00
Cacodemon345
6b55fa3d2e NEC NOT1 instruction (#5) 
Fix bit value usage of TEST1 instruction
 2022-09-04 15:25:08 -04:00
Cacodemon345
474ab60c97 NEC TEST1 instruction (#4) 2022-09-04 15:11:04 -04:00
Cacodemon345
71dde8658b Implement more NEC V20/V30 and 8018x instructions (#3) 
* Implement more NEC V20/V30 and 8018x instructions

* PUSHA/PUSH R
* POPA/POP R
* RO(L/R)4 r/m (NEC only)

* Fix critical mistake
 2022-09-04 12:30:21 -04:00
Cacodemon345
18d15758f5 Don't set ZF on MUL/MULU operations on NEC V20/V30 (#2) 2022-09-03 14:27:05 -04:00
Cacodemon345
028cbe7b4e NEC V20/V30: Cycle count fixes (#1) 
* Correct the names of NEC V20/V30 in Settings

Make NEC V30 have correct CPU types

* Treat NEC V20 as a Intel 8088 variant
 2022-09-03 05:55:53 -04:00
Jasmine Iwanek
9eaee6e20d Merge branch '86Box:master' into nec-v20 2022-08-31 16:42:10 -04:00
Jasmine Iwanek
672c15076c Merge branch '86Box:master' into nec-v20 2022-08-21 17:07:34 -04:00
RichardG867
d41bf191a5 Merge branch 'master' of ssh://github.com/86Box/86Box 2022-08-18 17:23:47 -03:00
RichardG867
48b372c60a gdbstub: Always ignore dynarec choice when compiled in 2022-08-18 17:23:41 -03:00
Miran Grča
ee651ae48f Update x86_ops_bcd.h 
Reverted the AAM instruction to again set the divisor to 10 when 0 is specified.
 2022-08-14 20:47:36 +02:00
Alexander Babikov
603cdcbb37 Clear unfilled registers when returning CPUID results on K6-2/III/+ CPUs 2022-08-13 15:41:00 +05:00