Rev |
Log message |
Author |
Age |
Path |
202 |
Additional ZipCPU changes associated w 8b upgrade |
dgisselq |
2768d 01h |
/zipcpu/trunk/doc/spec.pdf |
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 |
2892d 21h |
/zipcpu/trunk/doc/spec.pdf |
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 |
3004d 00h |
/zipcpu/trunk/doc/spec.pdf |
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 |
3075d 05h |
/zipcpu/trunk/doc/spec.pdf |
92 |
Adjustments made to match the simplified early branching. |
dgisselq |
3173d 22h |
/zipcpu/trunk/doc/spec.pdf |
73 |
Documentations updates. |
dgisselq |
3205d 00h |
/zipcpu/trunk/doc/spec.pdf |
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 |
3211d 04h |
/zipcpu/trunk/doc/spec.pdf |
68 |
Updated specification, includes well illustrated pipeline discussion. |
dgisselq |
3246d 05h |
/zipcpu/trunk/doc/spec.pdf |
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 |
3295d 01h |
/zipcpu/trunk/doc/spec.pdf |
37 |
Fixed some minor spelling errors. |
dgisselq |
3303d 18h |
/zipcpu/trunk/doc/spec.pdf |
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 |
3304d 07h |
/zipcpu/trunk/doc/spec.pdf |
33 |
Finally finished a first draft of the full specification! |
dgisselq |
3333d 00h |
/zipcpu/trunk/doc/spec.pdf |
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 |
3333d 08h |
/zipcpu/trunk/doc/spec.pdf |
24 |
Lots more changes to the spec. It's still not done, but it is more complete
than before. |
dgisselq |
3336d 09h |
/zipcpu/trunk/doc/spec.pdf |
23 |
Oops -- left some portions of the RTC Clock spec in with the ZIP CPU spec.
These were quickly removed. |
dgisselq |
3338d 05h |
/zipcpu/trunk/doc/spec.pdf |
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 |
3338d 05h |
/zipcpu/trunk/doc/spec.pdf |