Rev |
Log message |
Author |
Age |
Path |
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 |
2957d 20h |
/zipcpu/trunk/doc/ |
107 |
Adding a missing file. |
dgisselq |
3010d 12h |
/zipcpu/trunk/doc/ |
106 |
Updated to allow building without the sources for the graphics used in the
document. |
dgisselq |
3010d 16h |
/zipcpu/trunk/doc/ |
92 |
Adjustments made to match the simplified early branching. |
dgisselq |
3056d 13h |
/zipcpu/trunk/doc/ |
85 |
Minor update/correction to operand B definition. |
dgisselq |
3082d 11h |
/zipcpu/trunk/doc/ |
79 |
Adjusted the opcodes for NOOP, BREAK, and LOCK. |
dgisselq |
3086d 15h |
/zipcpu/trunk/doc/ |
78 |
Found/corrected annoying bug in floating point documentation of the opcode
table. |
dgisselq |
3086d 15h |
/zipcpu/trunk/doc/ |
73 |
Documentations updates. |
dgisselq |
3087d 15h |
/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 |
3087d 15h |
/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 |
3093d 19h |
/zipcpu/trunk/doc/ |
68 |
Updated specification, includes well illustrated pipeline discussion. |
dgisselq |
3128d 19h |
/zipcpu/trunk/doc/ |
67 |
Includes timing diagrams in support of a very descriptive specification section. |
dgisselq |
3128d 20h |
/zipcpu/trunk/doc/ |
49 |
Final set of changes finishing the Dhrystone package. Dhrystone, as
implemented by hand in assembly, now works. |
dgisselq |
3174d 13h |
/zipcpu/trunk/doc/ |
47 |
Added some new graphics, includes the file for the Zip Bones system. |
dgisselq |
3174d 13h |
/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 |
3177d 16h |
/zipcpu/trunk/doc/ |
37 |
Fixed some minor spelling errors. |
dgisselq |
3186d 09h |
/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 |
3186d 22h |
/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 |
3203d 13h |
/zipcpu/trunk/doc/ |
33 |
Finally finished a first draft of the full specification! |
dgisselq |
3215d 15h |
/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 |
3215d 23h |
/zipcpu/trunk/doc/ |
24 |
Lots more changes to the spec. It's still not done, but it is more complete
than before. |
dgisselq |
3219d 00h |
/zipcpu/trunk/doc/ |
23 |
Oops -- left some portions of the RTC Clock spec in with the ZIP CPU spec.
These were quickly removed. |
dgisselq |
3220d 20h |
/zipcpu/trunk/doc/ |
22 |
|
dgisselq |
3220d 20h |
/zipcpu/trunk/doc/ |
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 |
3220d 20h |
/zipcpu/trunk/doc/ |
10 |
Here's the watchdog timer code, as well as some pictures of the register
set. |
dgisselq |
3241d 13h |
/zipcpu/trunk/doc/ |
8 |
Fixed the rotate left instruction to work in the zasm parser, and to be
properly referenced in the simulator. The instruction set documentation was
also adjusted to reflect what the CPU actually does. |
dgisselq |
3241d 19h |
/zipcpu/trunk/doc/ |
7 |
Here's the iset.html file that was at one time in the gfx directory, but
which could not be moved due to a bad gateway error ... (Grrr). |
dgisselq |
3241d 20h |
/zipcpu/trunk/doc/ |
6 |
Trying to move iset.html from gfx directory. |
dgisselq |
3241d 20h |
/zipcpu/trunk/doc/ |
5 |
Updated colors in the graphics. |
dgisselq |
3241d 20h |
/zipcpu/trunk/doc/ |
2 |
An initial load. No promises of what works or not, but this is where the
project is at. |
dgisselq |
3242d 14h |
/zipcpu/trunk/doc/ |