| Rev |
Log message |
Author |
Age |
Path |
| 165 |
Added a test to make certain that the arithmetic right shift was properly
propagating the high order bit. (The test works under verilator, but didn't
initially work in Xilinx -- thus a difference between the two.) |
dgisselq |
2871d 06h |
/zipcpu/trunk/sw/zasm |
| 156 |
Fixed a compiler warning for an unused result. |
dgisselq |
2902d 22h |
/zipcpu/trunk/sw/zasm |
| 143 |
This section belatedly adjusts the zasm assembler so that it can handle
the LONG_MPY changes that have taken place. However, the test.S assembler
test script is still not properly testing the multiplies--at least it will
succeed on everything else. |
dgisselq |
2935d 21h |
/zipcpu/trunk/sw/zasm |
| 137 |
This should (again) fix the bug of trying to build optest.cpp. |
dgisselq |
2956d 01h |
/zipcpu/trunk/sw/zasm |
| 126 |
Lots of changes preparing the assembly for an instruction set change. While
implemented, they are still commented out via #ifdef LONG_MPY. By defining
LONG_MPY, this new change set will take place. |
dgisselq |
2956d 22h |
/zipcpu/trunk/sw/zasm |
| 123 |
This test now catches and tests some of the pipeline bugs I've been chasing. |
dgisselq |
2966d 20h |
/zipcpu/trunk/sw/zasm |
| 110 |
The makefile no longer requires (or supports) building the obsolete machine
code test file optest. |
dgisselq |
2984d 07h |
/zipcpu/trunk/sw/zasm |
| 109 |
This file is now marked as obsolete. |
dgisselq |
2984d 07h |
/zipcpu/trunk/sw/zasm |
| 105 |
Fixed some nasty early branching bugs. Adjusted the Makefile to declare that
cpudefs.h was automatically generated from cpudefs.v, and made sure that
zipbones included the cpudefs.v so it could get the DEBUG_SCOPE define.
In addition, the test.S was updated to test long jumps, the early branching
bug we found, and all three early branching instructions: ADD #x,PC, LOC(PC),PC,
and LDI #x,PC. |
dgisselq |
3000d 07h |
/zipcpu/trunk/sw/zasm |
| 103 |
A barely functional, but somewhat working, version of GCC to check in.
If the Lord is willing, it should be accompanied by a newlib port soon.
That port should move the GCC status from barely functional but somewhat
working to functional and working, although not (yet) complete. |
dgisselq |
3001d 12h |
/zipcpu/trunk/sw/zasm |
| 101 |
Adjusted the "BREAK" instruction so that it will now disassemble properly
with an operand. This was necessary to create a (trap_if ...) instruction
for the GCC compiler. |
dgisselq |
3005d 23h |
/zipcpu/trunk/sw/zasm |
| 100 |
Some changes to support early branching: branches are now ADD #x,PC instructions
instead of MOV #x(PC),PC--providing greater range to the CPU. When that range
is insufficient, ZPARSER now recognizes long jump instructions coded as
LOD (PC),PC followed by the jump address. (This change was made necessary by
the need to build an assembler/linker that could create instructions that would
jump to any address in the 32-bit address space. In short, a part of the
ongoing GCC upgrade and rework.) |
dgisselq |
3005d 23h |
/zipcpu/trunk/sw/zasm |
| 99 |
Added big-endian versus little-endian functionality. You can now specify which
your input file is as a command line parameter, and zdump will properly
disassemble the file. |
dgisselq |
3005d 23h |
/zipcpu/trunk/sw/zasm |
| 98 |
Added justed longjump instructions from the previous (not used, broken)
functionality to the new LOD (PC),PC functionality. |
dgisselq |
3005d 23h |
/zipcpu/trunk/sw/zasm |
| 97 |
Added longjump instructions. |
dgisselq |
3005d 23h |
/zipcpu/trunk/sw/zasm |
| 96 |
Added the longjump functionality, so that the assembler will properly assemble
instructions to arbitrary 32-bit addresses. |
dgisselq |
3005d 23h |
/zipcpu/trunk/sw/zasm |
| 95 |
Fixed a bug whereby a mistaken code for CLR was masking a valid LDI of a large
integer value. |
dgisselq |
3008d 05h |
/zipcpu/trunk/sw/zasm |
| 89 |
Minor changes, to include making default branching an ADD.[condition] X,PC
instruction, rather than allowing both MOV X(PC),PC and ADD X,PC instructions.
Further zopcodes.cpp contains several bug fixes. |
dgisselq |
3041d 00h |
/zipcpu/trunk/sw/zasm |
| 70 |
Updated the assembler support files, zopcodes in particular, to handle
the disassembly of the new very long instruction word codes. |
dgisselq |
3072d 02h |
/zipcpu/trunk/sw/zasm |
| 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 |
3078d 06h |
/zipcpu/trunk/sw/zasm |
