| Rev |
Log message |
Author |
Age |
Path |
| 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 |
3167d 22h |
/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 |
3172d 09h |
/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 |
3172d 09h |
/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 |
3172d 09h |
/zipcpu/trunk/sw/zasm/ |
| 98 |
Added justed longjump instructions from the previous (not used, broken)
functionality to the new LOD (PC),PC functionality. |
dgisselq |
3172d 09h |
/zipcpu/trunk/sw/zasm/ |
| 97 |
Added longjump instructions. |
dgisselq |
3172d 09h |
/zipcpu/trunk/sw/zasm/ |
| 96 |
Added the longjump functionality, so that the assembler will properly assemble
instructions to arbitrary 32-bit addresses. |
dgisselq |
3172d 09h |
/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 |
3174d 15h |
/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 |
3207d 10h |
/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 |
3238d 12h |
/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 |
3244d 16h |
/zipcpu/trunk/sw/zasm/ |
| 60 |
Fixed assembler processing of jump instructions, so that the new fast
return instruction can be used. The test file was modified to test
pipelined value passing within the CPU. That's where the value gets
(re)used before being stored back in the register file. As of this release,
all tests work. |
dgisselq |
3305d 17h |
/zipcpu/trunk/sw/zasm/ |
| 55 |
A test was added to double check whether carry following right shifts worked.
This was a necessary part of getting two cycle linear feedback shift register
operations working for a memory test on a XuLA2 board. With this, I can now
verify that such feedback registers work for pseudorandom number purposes. |
dgisselq |
3315d 19h |
/zipcpu/trunk/sw/zasm/ |
| 54 |
This builds on the support for backslash character escapes in both single
and multicharacter expressions. Backslash character escapes are now
possible with quotations and backslashes, and the same code to interpret
the escapes is applied to both single and multicharacter sequences. |
dgisselq |
3315d 19h |
/zipcpu/trunk/sw/zasm/ |
| 53 |
Updated the #include/#define directives to work properly for nested includes.
(They were supposed to work properly for nested includes before ... and didn't)
This fixes those bugs. |
dgisselq |
3315d 19h |
/zipcpu/trunk/sw/zasm/ |
| 52 |
Added the capability to "see" character's encoded within a binary file,
by printing the character value(s) of each opcode (if they are printable)
on each line. |
dgisselq |
3315d 19h |
/zipcpu/trunk/sw/zasm/ |
| 51 |
Added the capability to look at binary files and 'see' characters as they
are encoded in memory. |
dgisselq |
3315d 19h |
/zipcpu/trunk/sw/zasm/ |
| 46 |
A series of updates associated with getting Dhrystone to work. Includes
updates to getting multiple files to link/work together within the assembler,
as well as getting quoted quotations to work in the lexer, and better
include file support in the preprocessor. |
dgisselq |
3325d 11h |
/zipcpu/trunk/sw/zasm/ |
| 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 |
3328d 14h |
/zipcpu/trunk/sw/zasm/ |
| 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 |
3337d 19h |
/zipcpu/trunk/sw/zasm/ |
