claunia/86Box
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Implement Cyrix EMMI extensions and 4 FPU instructions

Browse Source 
PADDSIW, PSUBSIW, PMULHRW (named PMULHRWC in the code as recognized by some assemblers), PMULHRIW, PDISTIB, PMACHRIW, PAVEB, PMAGW, PMVZB, PMVNZB, PMVLZB, PMVGEZB, FTSTP, FRINT2, FRINEAR, FRICHOP are implemented for Cyrix 6x86MX. Cyrix 6x86(L) only has the last 4 instructions.
This commit is contained in:
Cacodemon345
2025-03-06 00:54:28 +06:00
parent 6a380af6bb
commit 5f3641ecbd
10 changed files with 1723 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
src/cpu/cpu.h
View File

@@ -589,6 +589,16 @@ extern uint32_t _tr[8];
extern uint32_t cache_index;
extern uint8_t _cache[2048];
/* For the Cyrix 6x86(MX) */
extern uint8_t ccr0;
extern uint8_t ccr1;
extern uint8_t ccr2;
extern uint8_t ccr3;
extern uint8_t ccr4;
extern uint8_t ccr5;
extern uint8_t ccr6;
extern uint8_t ccr7;
/*Segments -
_cs,_ds,_es,_ss are the segment structures
CS,DS,ES,SS is the 16-bit data