On Thu, 16 Mar 2000, Nestor Soriano wrote:
> - New Z380 instructions make programming easier (for example all the memory
> is accessed linearly, and there is instructions like EX DE,DE'; IX IX,IY;
> PUSH #1234...), and programs shorter and faster (there is multiplication
> and division instructions, 16 bit logical, 32 bit arithmetic, and four set
> of main + alternate registers. Besides each register is 32 bit long. So:
> less PUSH+POP for saving state every time a subroutine is executed!)
A Pascal or C compiler for Z380 would be great. The Z380 can do stackpointer
relative addressing, which is very convenient for passing subroutine
parameters.
> - Multitasking is possible (Z380 + R800/Z80), so global speed can be
> doubled. Now we are designing a "Hardware Server" software: in this working
> mode, MSX will just access peripherals (ports, mapped memory, slots, VRAM,
> etc...) when Z380 asks for it.
This is cool. Sending VDP commands to a queue without bothering whether the
VDP is busy or idle.
Bye,
Maarten
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