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Rev Log message Author Age Path
107 Adding a missing file. dgisselq 2303d 14h /zipcpu/trunk/doc/
106 Updated to allow building without the sources for the graphics used in the
dgisselq 2303d 18h /zipcpu/trunk/doc/
92 Adjustments made to match the simplified early branching. dgisselq 2349d 15h /zipcpu/trunk/doc/
85 Minor update/correction to operand B definition. dgisselq 2375d 13h /zipcpu/trunk/doc/
79 Adjusted the opcodes for NOOP, BREAK, and LOCK. dgisselq 2379d 17h /zipcpu/trunk/doc/
78 Found/corrected annoying bug in floating point documentation of the opcode
dgisselq 2379d 17h /zipcpu/trunk/doc/
73 Documentations updates. dgisselq 2380d 16h /zipcpu/trunk/doc/
72 Some updated graphics, now containing images of the CPU that include the
divide and (currently non-existant) floating point unit.
dgisselq 2380d 16h /zipcpu/trunk/doc/
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 2386d 21h /zipcpu/trunk/doc/
68 Updated specification, includes well illustrated pipeline discussion. dgisselq 2421d 21h /zipcpu/trunk/doc/
67 Includes timing diagrams in support of a very descriptive specification section. dgisselq 2421d 21h /zipcpu/trunk/doc/
49 Final set of changes finishing the Dhrystone package. Dhrystone, as
implemented by hand in assembly, now works.
dgisselq 2467d 15h /zipcpu/trunk/doc/
47 Added some new graphics, includes the file for the Zip Bones system. dgisselq 2467d 15h /zipcpu/trunk/doc/
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 2470d 18h /zipcpu/trunk/doc/
37 Fixed some minor spelling errors. dgisselq 2479d 11h /zipcpu/trunk/doc/
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 2480d 00h /zipcpu/trunk/doc/
35 I updated the system diagram to reflect the new version that has a direct
memory access controller, rather than the (useless) manual cache.
dgisselq 2496d 14h /zipcpu/trunk/doc/
33 Finally finished a first draft of the full specification! dgisselq 2508d 17h /zipcpu/trunk/doc/
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 2509d 01h /zipcpu/trunk/doc/
24 Lots more changes to the spec. It's still not done, but it is more complete
than before.
dgisselq 2512d 02h /zipcpu/trunk/doc/

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