@Qwerty I see an optimization in there. When you use the MULU.L instruction do not follow it with the STS MACL. If you access the MAC following a multiply instruction, MULU will take 3 cycles, but if you put at least one other instruction in between the MULU and the STS, then MULU only takes 1 cycle

And the idea with the extensions was for the asm shell. Just like Doors the shell doesn't have to be for asm programs only. Added features could be BASIC progs too. But my main idea was that the shell would have something like a registry found on windows systems. Because on windows for example Microsoft word will register the .doc file extension to itself. So whenever you select a .doc file, word will open that file. The same idea could apply to a .class file on the shell. When a .class file is selected then the JVM will be ran with a pointer to the file to run, passed as an argument.

Perhaps a 4 bit * 4 bit = 8 bit could be added. I have a diagram laying around somewhere so I will post that soon. At the first bit multiply is very simple, but doubles in size with every bit. I think overall that instruction is about 300 transistors if that in not too many

btw: I wonder how many transistors the 256 bit fpu square root instructions take on the sse5 set.

.org. Is good to use too, same with .reallocate

And there are others, but most people don't use them much, and still they're mostly used for z80 assembly development.

Ashbad, I can't find the meaning of .reallocate anywhere. What does that do? And the .org was my bad there. But actually unlike on the z80, most people will not use .org because most SH3 code is location independent and I've also been pushing for shell-cross compatibility for all prizm programs.

; actually isn't a new-line character.  And there are two new line characters, one is 1 byte, one is two.  One is a line-break and feed I believe, the other is just a line break.

The 1 byte one is 0x0A, the 2 byte one is 0x0D0A

I was just mentioning how in C/C++ you can start a new line using a ; but that is already reserved in asm for indicating a comment. What I'm looking for is the character allowing you to use multiple commands in one line.

So why would Casio need to clear the pipeline with synco and invalidate the cache block with ICBI. Where do they use these commands.

Okay I'm working on getting a shell up and running now, but I can't find a syscall that meets one of my needs. What I need to do is to create a list of the files contained in a directory. None of the MCS or Bfile syscalls seem to accomplish this so I'm wondering if such call dos exist, is it undocumented or do I need to write a routine to find this information.

The other thing I was wondering about was if it is better to do a syscall using the 80020070 address or to just call directly to the the syscall. My only concern with calling directly was that some OS's could use different locations for the calls making some older programs unusable.

Has anyone considered yet making a logism like program for a calc. You could have scrolling screen and use a tile mapper for all of the circuits. I might try this for the Prizm later on, but this could be a good 83+ project to try for someone.

Thanks for pointing out the help file Simon. I had trouble opening it at first due to Windows 7 incompatibilities, but soon fixed that using 7zip. I do have a small problem now that involves the fx 9860g SDK. Apparently to download that form Casio's site you must own an fx 9860g which I do not have. Hopefully this shouldn't be too much of a problem once I finish my assembler.

In other things. What I meant to say by the Insight explanation is if you could add comments to the code. I do already know C, but it can be hard to read without comments.

Lastly with the assembler/IDE I'm working on. I'm designing it to be much more advanced than the standard gcc assembler.  New features that it will include are a special type of macro (too difficult to explain here), namespaces, structs, thread support, self-modifying code support, interrupts/exception handling,  auto opts, and classes/objects. The IDE will be like any standard coding IDE with syntax highlighting and all that sort, but will add certain features such as helping the coder establish code and data blocks with proper displacements along with 16 bit color tools. At the moment this project is in development and early versions will be available soon.