[A83] Re: microcode
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[A83] Re: microcode
At 20:54 2001-09-20, you wrote:
>But there is no way to "call" such a microcode instruction on the z80?
>Just like any other assembly instruction. If we could make programs
>in microcode it would be faster then assembly, like this:
>BASIC>ASSEMBLY>MICROCODE
microcode is the little "program" in the processor that _is_ the instruction
So when you use an instruction on such a processor you are "calling" microcode.
Since the z80 isn't built in the microcode way, there is no microcode to call.
You can't "convert" a program to microcode, the processor doesn't
understand microcode coming in through the databus, in fact, the microcode
is what controls if anything should be read from the databus or not and if
what you then just read is an instruction or data, or whatever or not. A
completly different layer that is.
///Olle
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