| 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 |
2921d 10h |
/zipcpu/trunk/doc/ |
| 107 |
Adding a missing file. |
dgisselq |
2974d 03h |
/zipcpu/trunk/doc/ |
| 106 |
Updated to allow building without the sources for the graphics used in the
document. |
dgisselq |
2974d 06h |
/zipcpu/trunk/doc/ |
| 92 |
Adjustments made to match the simplified early branching. |
dgisselq |
3020d 03h |
/zipcpu/trunk/doc/ |
| 85 |
Minor update/correction to operand B definition. |
dgisselq |
3046d 01h |
/zipcpu/trunk/doc/ |
| 79 |
Adjusted the opcodes for NOOP, BREAK, and LOCK. |
dgisselq |
3050d 05h |
/zipcpu/trunk/doc/ |
| 78 |
Found/corrected annoying bug in floating point documentation of the opcode
table. |
dgisselq |
3050d 05h |
/zipcpu/trunk/doc/ |
| 73 |
Documentations updates. |
dgisselq |
3051d 05h |
/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 |
3051d 05h |
/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 |
3057d 09h |
/zipcpu/trunk/doc/ |
| 68 |
Updated specification, includes well illustrated pipeline discussion. |
dgisselq |
3092d 10h |
/zipcpu/trunk/doc/ |
| 67 |
Includes timing diagrams in support of a very descriptive specification section. |
dgisselq |
3092d 10h |
/zipcpu/trunk/doc/ |
| 49 |
Final set of changes finishing the Dhrystone package. Dhrystone, as
implemented by hand in assembly, now works. |
dgisselq |
3138d 04h |
/zipcpu/trunk/doc/ |
| 47 |
Added some new graphics, includes the file for the Zip Bones system. |
dgisselq |
3138d 04h |
/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 |
3141d 07h |
/zipcpu/trunk/doc/ |
| 37 |
Fixed some minor spelling errors. |
dgisselq |
3150d 00h |
/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 |
3150d 12h |
/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 |
3167d 03h |
/zipcpu/trunk/doc/ |
| 33 |
Finally finished a first draft of the full specification! |
dgisselq |
3179d 05h |
/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 |
3179d 13h |
/zipcpu/trunk/doc/ |
| 24 |
Lots more changes to the spec. It's still not done, but it is more complete
than before. |
dgisselq |
3182d 14h |
/zipcpu/trunk/doc/ |
| 23 |
Oops -- left some portions of the RTC Clock spec in with the ZIP CPU spec.
These were quickly removed. |
dgisselq |
3184d 10h |
/zipcpu/trunk/doc/ |
| 22 |
|
dgisselq |
3184d 10h |
/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 |
3184d 10h |
/zipcpu/trunk/doc/ |
| 10 |
Here's the watchdog timer code, as well as some pictures of the register
set. |
dgisselq |
3205d 03h |
/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 |
3205d 09h |
/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 |
3205d 11h |
/zipcpu/trunk/doc/ |
| 6 |
Trying to move iset.html from gfx directory. |
dgisselq |
3205d 11h |
/zipcpu/trunk/doc/ |
| 5 |
Updated colors in the graphics. |
dgisselq |
3205d 11h |
/zipcpu/trunk/doc/ |
| 2 |
An initial load. No promises of what works or not, but this is where the
project is at. |
dgisselq |
3206d 04h |
/zipcpu/trunk/doc/ |
