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i put the a<<0 for concept completeness ups!! i was wrong when i said "the (a << 0) can be removed ", maybe a should say that you can remove the "<< 0" shif left 0 to a and live only "a". Talking about asm/c/c++ code, you can use all c bitwise operations and you dont n...

will this work: byte R; // the flag register int a,b,c,d,e,f,g,h; //h being bit 7 and a as bit 0 #define MKFLAG&#40;&#41; R = &#40;h<<7|g<<6|f<<5|e<<4|d<<3|c<<2|b<<1|a<<0&#41; yep in will work, but if you take as a constant that your emulator will store in int flags always 1 or 0. th...

Bah. I dont know the difference between reoply and edit. Read on ... Sorry, i writed the post on the fly and i tried to change 2 things in my first reply, so that could explain the collition. So, taking into account that i will add/correct here to myself: Correction: The lookup table generation cod...

C allows you to define a struct with bit fields (see http://www.google.com/search?q=struct+bit+fields ), with which you could represent all flags with one byte and set a bit with one assignment, without if's or shift's, but I have never used it and I don't know if GCC optimize it with fast MIPS ins...

i know nearly nothing bout the z80 (i made a 6502 emulator) and since it is a 8 bit cpu the best way i think is as you said use a plain "int" for each flag, and have a "byte" (usigned char) for the emulating the flag register itself. case 1: Only one variable (byte). Suppouse you...

thanks a lot

im accessing vram directly thrugh 0x44000000, but the problem is that i dont know the pitch, so supouse i want to make a code to fill all screen with an RGB color: sceDisplaySetMode&#40;0, 480, 272&#41;; int * p_vram = &#40;int *&#41; 0x44000000; sceDisplaySetFrameBuf&#40;&#4...

thanks for the advice, im thinking now to start with "pspgl" for simplicity, anyway there is a question: is pspgl fast for making a Ninentdo (8 Bit) emulator? i mean the rendering graphics part of course :) .

Hi im new and im wondering if there is a tutorial or something similar to the kernel GU calls, i need using kernel calls cos i need fast rendering, or perhaps a code/lib? I have been searching the inet for a thing like that and no answers. I only want to know if there is something so i dont spent a ...