- Дата: 25-05-2022, 18:46
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The Lisa is a really advanced machine and subsequently
is just too complicated to emulate 100% in hardware, however, we can obtain excellent
outcomes if we specify a point of view. So obviously, whereas 100% Hardware Emulation is the objective of
any emulator author, some compromises should be selected. If I discover
that there exists crucial software program that makes use of the 6504 in this fashion, I can
all the time add a full 6504 emulator (6504 is a slightly crippled 6502) or discover out
what exactly this software program does. The Lisa laptop, like all 68000 based mostly machines, makes use of memory mapped I/O. It will get its power from the facility provide which means that a Lisa that
appears like its off is actually simply sleeping. One factor that we are able to do is to
double the pixel height, which virtually will get the best side ratio, however not
fairly. It is unimaginable to correctly get the identical exact facet ratio as a real
Lisa on today's displays. Within the Lisa there are 4 boards inside of a cage like motherboard. There are several great references online which
fit this goal, certainly one of which is David T. Craig's "The Lisa Legacy" paper.