| Rev |
Log message |
Author |
Age |
Path |
| 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 |
2976d 18h |
/zipcpu/trunk/doc |
| 164 |
Updated with inputs from Hellwig Geisse regarding the details of the ECO32
CPU. |
dgisselq |
2985d 00h |
/zipcpu/trunk/doc |
| 163 |
Trimmed OR1K instruction set down from 219 instructions, to the minimum number
of 48. Thanks to Olof for helping identify the minimal set! |
dgisselq |
2993d 02h |
/zipcpu/trunk/doc |
| 162 |
Noted 64-bit integers are by extension, as are vector instructions. |
dgisselq |
2993d 03h |
/zipcpu/trunk/doc |
| 161 |
Initial version of the ORConf slides, showing only the initial CPU survey. |
dgisselq |
2993d 03h |
/zipcpu/trunk/doc |
| 153 |
Adds internal link functionality to the specification document format. |
dgisselq |
3008d 14h |
/zipcpu/trunk/doc |
| 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 |
3048d 00h |
/zipcpu/trunk/doc |
| 107 |
Adding a missing file. |
dgisselq |
3100d 16h |
/zipcpu/trunk/doc |
| 106 |
Updated to allow building without the sources for the graphics used in the
document. |
dgisselq |
3100d 20h |
/zipcpu/trunk/doc |
| 92 |
Adjustments made to match the simplified early branching. |
dgisselq |
3146d 16h |
/zipcpu/trunk/doc |
| 85 |
Minor update/correction to operand B definition. |
dgisselq |
3172d 15h |
/zipcpu/trunk/doc |
| 79 |
Adjusted the opcodes for NOOP, BREAK, and LOCK. |
dgisselq |
3176d 19h |
/zipcpu/trunk/doc |
| 78 |
Found/corrected annoying bug in floating point documentation of the opcode
table. |
dgisselq |
3176d 19h |
/zipcpu/trunk/doc |
| 73 |
Documentations updates. |
dgisselq |
3177d 18h |
/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 |
3177d 18h |
/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 |
3183d 23h |
/zipcpu/trunk/doc |
| 68 |
Updated specification, includes well illustrated pipeline discussion. |
dgisselq |
3218d 23h |
/zipcpu/trunk/doc |
| 67 |
Includes timing diagrams in support of a very descriptive specification section. |
dgisselq |
3218d 23h |
/zipcpu/trunk/doc |
| 49 |
Final set of changes finishing the Dhrystone package. Dhrystone, as
implemented by hand in assembly, now works. |
dgisselq |
3264d 17h |
/zipcpu/trunk/doc |
| 47 |
Added some new graphics, includes the file for the Zip Bones system. |
dgisselq |
3264d 17h |
/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 |
3267d 20h |
/zipcpu/trunk/doc |
| 37 |
Fixed some minor spelling errors. |
dgisselq |
3276d 13h |
/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 |
3277d 01h |
/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 |
3293d 16h |
/zipcpu/trunk/doc |
| 33 |
Finally finished a first draft of the full specification! |
dgisselq |
3305d 19h |
/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 |
3306d 02h |
/zipcpu/trunk/doc |
| 24 |
Lots more changes to the spec. It's still not done, but it is more complete
than before. |
dgisselq |
3309d 03h |
/zipcpu/trunk/doc |
| 23 |
Oops -- left some portions of the RTC Clock spec in with the ZIP CPU spec.
These were quickly removed. |
dgisselq |
3310d 23h |
/zipcpu/trunk/doc |
| 22 |
|
dgisselq |
3310d 23h |
/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 |
3310d 23h |
/zipcpu/trunk/doc |
