ShuriZma
/
BizHawk
mirror of https://github.com/TASEmulators/BizHawk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Commodore64: don't use color-ram selector pin on PLA, marginal performance gain

This commit is contained in:
saxxonpike 2013-08-13 01:55:39 +00:00
parent 57fae391e5
commit a061e898a6
1 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
BizHawk.Emulation/Computers/Commodore64/MOS/MOSPLA.cs
View File

@ -137,7 +137,7 @@ namespace BizHawk.Emulation.Computers.Commodore64.MOS
bool basic; bool basic;
bool kernal; bool kernal;
bool charrom; bool charrom;
bool grw; //bool grw;
bool io; bool io;
bool roml; bool roml;
bool romh; bool romh;
@ -157,9 +157,9 @@ namespace BizHawk.Emulation.Computers.Commodore64.MOS
va14 = a14; va14 = a14;
va13 = a13; va13 = a13;
va12 = a12; va12 = a12;
aec = !ReadAEC(); aec = !ReadAEC(); //active low
ba = ReadBA(); ba = ReadBA();
cas = !true; cas = !true; //active low
p0 = loram && hiram && a15 && !a14 && a13 && !aec && read && game; p0 = loram && hiram && a15 && !a14 && a13 && !aec && read && game;
p1 = hiram && a15 && a14 && a13 && !aec && read && game; p1 = hiram && a15 && a14 && a13 && !aec && read && game;
@ -190,12 +190,12 @@ namespace BizHawk.Emulation.Computers.Commodore64.MOS
p27 = a15 && !a14 && a13 && exrom && !game; p27 = a15 && !a14 && a13 && exrom && !game;
p28 = a15 && a14 && !a13 && !a12 && exrom && !game; p28 = a15 && a14 && !a13 && !a12 && exrom && !game;
p30 = cas; p30 = cas;
p31 = !cas && a15 && a14 && !a13 && a12 && !aec && !read; //p31 = !cas && a15 && a14 && !a13 && a12 && !aec && !read;
casram = !(p0 || p1 || p2 || p3 || p4 || p5 || p6 || p7 || p9 || p10 || p11 || p12 || p13 || p14 || p15 || p16 || p17 || p18 || p19 || p20 || p21 || p22 || p23 || p24 || p25 || p26 || p27 || p28 || p30); casram = !(p0 || p1 || p2 || p3 || p4 || p5 || p6 || p7 || p9 || p10 || p11 || p12 || p13 || p14 || p15 || p16 || p17 || p18 || p19 || p20 || p21 || p22 || p23 || p24 || p25 || p26 || p27 || p28 || p30);
basic = p0; basic = p0;
kernal = (p1 || p2); kernal = (p1 || p2);
charrom = (p3 || p4 || p5 || p6 || p7); charrom = (p3 || p4 || p5 || p6 || p7);
grw = p31; //grw = p31;
io = (p9 || p10 || p11 || p12 || p13 || p14 || p15 || p16 || p17 || p18); io = (p9 || p10 || p11 || p12 || p13 || p14 || p15 || p16 || p17 || p18);
roml = (p19 || p20); roml = (p19 || p20);
romh = (p21 || p22 || p23); romh = (p21 || p22 || p23);