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[/] [zipcpu/] [trunk/] [doc/] [src/] - Rev 199

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Rev Log message Author Age Path
199 Massive specification rewrite, brings it up to date with the current ZipCPU
state. This does not reflect any major change to the CPU.
dgisselq 2957d 09h /zipcpu/trunk/doc/src/
167 Updated the spec to reflect changes in the CC register: the user break
flag, and the ability to command a clearing of the instruction cache.
dgisselq 3068d 12h /zipcpu/trunk/doc/src/
153 Adds internal link functionality to the specification document format. dgisselq 3100d 08h /zipcpu/trunk/doc/src/
139 Changes necessary to document the changed instruction set: LDIHI became MPY,
and MPYU and MPYS became MPYUHI and MPYSHI respectively. See the specification
for more details.
dgisselq 3139d 17h /zipcpu/trunk/doc/src/
92 Adjustments made to match the simplified early branching. dgisselq 3238d 10h /zipcpu/trunk/doc/src/
73 Documentations updates. dgisselq 3269d 12h /zipcpu/trunk/doc/src/
69 This implements the "new Instruction Set" architecture for the Zip CPU. It's
a massive change set, that touches just about everything but probably not
enough of everything. Please see the spec.pdf for a description of this
new architecture.
dgisselq 3275d 16h /zipcpu/trunk/doc/src/
68 Updated specification, includes well illustrated pipeline discussion. dgisselq 3310d 16h /zipcpu/trunk/doc/src/
39 Here's the documentation update to support the pipelined read/writes of
the bus from the CPU, as well as the test file that proved they worked.
dgisselq 3359d 13h /zipcpu/trunk/doc/src/
37 Fixed some minor spelling errors. dgisselq 3368d 06h /zipcpu/trunk/doc/src/
36 *Lots* of changes to increase processing speed and remove pipeline stalls.

Removed the useless flash cache, replacing it with a proper DMA controller.

"make test" in the main directory now runs a test program in Verilator and
reports on the results.
dgisselq 3368d 19h /zipcpu/trunk/doc/src/
33 Finally finished a first draft of the full specification! dgisselq 3397d 12h /zipcpu/trunk/doc/src/
32 Updated the document to match the most recent changes to the CPU. Specifically,
these include the re-instatement of the full SUB command with immediate offset,
and ... others I cannot remember.

The new document also describes what conditions create pipeline stalls,
together with how many cycles each stall condition will create.
dgisselq 3397d 20h /zipcpu/trunk/doc/src/
24 Lots more changes to the spec. It's still not done, but it is more complete
than before.
dgisselq 3400d 21h /zipcpu/trunk/doc/src/
23 Oops -- left some portions of the RTC Clock spec in with the ZIP CPU spec.
These were quickly removed.
dgisselq 3402d 17h /zipcpu/trunk/doc/src/
22 dgisselq 3402d 17h /zipcpu/trunk/doc/src/
21 This update adds an incomplete version of the specification for the chip.
I ned to come back to this and do a lot more writing, but it is a start.
dgisselq 3402d 17h /zipcpu/trunk/doc/src/

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