| Rev |
Log message |
Author |
Age |
Path |
| 209 |
8b bytes, + formal verification throughout + dcache |
dgisselq |
2153d 09h |
/zipcpu/trunk/sw/zasm |
| 202 |
Additional ZipCPU changes associated w 8b upgrade |
dgisselq |
2892d 17h |
/zipcpu/trunk/sw/zasm |
| 200 |
Lots of GCC bugs fixed, some new features added, longs should work now. The
build scripts have also been updated and simplified. |
dgisselq |
2992d 00h |
/zipcpu/trunk/sw/zasm |
| 188 |
Adjusted the opcodes to match the binutils port: added RTN instructions, and
allowed BREAK instructions to include an immediate--to be interpreted by the
debugger. |
dgisselq |
3067d 15h |
/zipcpu/trunk/sw/zasm |
| 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 |
3128d 20h |
/zipcpu/trunk/sw/zasm |
| 156 |
Fixed a compiler warning for an unused result. |
dgisselq |
3160d 12h |
/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 |
3193d 10h |
/zipcpu/trunk/sw/zasm |
| 137 |
This should (again) fix the bug of trying to build optest.cpp. |
dgisselq |
3213d 15h |
/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 |
3214d 12h |
/zipcpu/trunk/sw/zasm |
| 123 |
This test now catches and tests some of the pipeline bugs I've been chasing. |
dgisselq |
3224d 10h |
/zipcpu/trunk/sw/zasm |
| 110 |
The makefile no longer requires (or supports) building the obsolete machine
code test file optest. |
dgisselq |
3241d 20h |
/zipcpu/trunk/sw/zasm |
| 109 |
This file is now marked as obsolete. |
dgisselq |
3241d 20h |
/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 |
3257d 20h |
/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 |
3259d 01h |
/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 |
3263d 13h |
/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 |
3263d 13h |
/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 |
3263d 13h |
/zipcpu/trunk/sw/zasm |
| 98 |
Added justed longjump instructions from the previous (not used, broken)
functionality to the new LOD (PC),PC functionality. |
dgisselq |
3263d 13h |
/zipcpu/trunk/sw/zasm |
| 97 |
Added longjump instructions. |
dgisselq |
3263d 13h |
/zipcpu/trunk/sw/zasm |
| 96 |
Added the longjump functionality, so that the assembler will properly assemble
instructions to arbitrary 32-bit addresses. |
dgisselq |
3263d 13h |
/zipcpu/trunk/sw/zasm |
