| Rev |
Log message |
Author |
Age |
Path |
| 181 |
Altered the RSP instruction to allow the stack pointed to either be restored from registers or stored to registers based on the status of a processor bit. Also modified LDX to simplify the address logic. |
jshamlet |
1876d 21h |
/open8_urisc/trunk/ |
| 180 |
Added additional Open8 compatible modules |
jshamlet |
1881d 01h |
/open8_urisc/trunk/ |
| 179 |
Replacing files accidentally deleted during check-in |
jshamlet |
1890d 20h |
/open8_urisc/trunk/ |
| 178 |
Adding Open8 toolset for pure assembly |
jshamlet |
1890d 21h |
/open8_urisc/trunk/ |
| 177 |
Fixed comments in RTC module |
jshamlet |
3201d 01h |
/open8_urisc/trunk/ |
| 176 |
Fixed documentation errors,
Modified uSec_Tick such that it is always generated regardless of the interval. |
jshamlet |
3205d 23h |
/open8_urisc/trunk/ |
| 175 |
Added 4 and 8-bit LCD interfaces with backlight and contrast DACs |
jshamlet |
3206d 04h |
/open8_urisc/trunk/ |
| 174 |
Added ROM/RAM wrappers |
jshamlet |
3400d 22h |
/open8_urisc/trunk/ |
| 173 |
Added a couple of useful interfaces for detecting button presses and clock changes. |
jshamlet |
3400d 23h |
/open8_urisc/trunk/ |
| 172 |
General code cleanup |
jshamlet |
3400d 23h |
/open8_urisc/trunk/ |
| 171 |
Fixed comments for offsets 0x0 - 0x3 to indicate the read value |
jshamlet |
3400d 23h |
/open8_urisc/trunk/ |
| 170 |
Added 24-bit resolution epoch timer / alarm clock |
jshamlet |
3400d 23h |
/open8_urisc/trunk/ |
| 169 |
Corrected issue with CMP and SBC generating an inverted carry flag and added new constants to the package file to simplify interfacing new modules. |
jshamlet |
3455d 23h |
/open8_urisc/trunk/ |
| 168 |
Simplified write data path logic,
Converted RTC to packed BCD,
Corrected several bugs in real time clock component, |
jshamlet |
4234d 20h |
/open8_urisc/trunk/ |
| 167 |
Updated CPU model; Pipelined ALU control signals to improve fMAX, corrected issue with interrupt controller priority not being obeyed, fixed bug in auto-indexing instructions where the upper register wasn't being properly incremented, cleaned up code to make the processor model easier to follow.
Added several useful modules that use the Open8 bus. |
jshamlet |
4242d 18h |
/open8_urisc/trunk/ |
| 166 |
fixed additional issues with range checking on PCREL relocations for open8, added test cases to verify, catch tree up with binutils datestamp 20120301 |
khays |
4806d 19h |
/open8_urisc/trunk/ |
| 165 |
fixed issues with PC relative fixups in the linker |
khays |
4808d 02h |
/open8_urisc/trunk/ |
| 164 |
Modified the data path to allow the bus to go idle while waiting for an interrupt. This makes it easier to debug code that uses the WAI instruction, as both Wr_Enable and Rd_Enable go low. |
jshamlet |
4878d 14h |
/open8_urisc/trunk/ |
| 163 |
sync with binutils 2.22.51.20111114 |
khays |
4916d 02h |
/open8_urisc/trunk/ |
| 162 |
Added optional generic to specify that the BRK instruction implements a WAit_for_Interrupt (WAI) instruction instead. Logically emulates INT, but without triggering a soft interrupt. Note that the NOP instruction maps to BRK, and will not function correctly if this option is set. |
jshamlet |
4969d 07h |
/open8_urisc/trunk/ |
| 161 |
synchronize binutils/ with gnu dev tree of 2.21.53.20110828 |
khays |
4993d 01h |
/open8_urisc/trunk/ |
| 160 |
synchronize binutils/gas with gnu dev tree of 2.21.53.20110828 |
khays |
4993d 01h |
/open8_urisc/trunk/ |
| 159 |
synchronize binutils/gold with gnu dev tree of 2.21.53.20110828 |
khays |
4993d 01h |
/open8_urisc/trunk/ |
| 158 |
synchronize binutils/opcodes with gnu dev tree of 2.21.53.20110828 |
khays |
4993d 01h |
/open8_urisc/trunk/ |
| 157 |
synchronize binutils/ld with gnu dev tree of 2.21.53.20110828 |
khays |
4993d 01h |
/open8_urisc/trunk/ |
| 156 |
Optimized for timing,
Flattened block structure to single entity. |
jshamlet |
5025d 21h |
/open8_urisc/trunk/ |
| 155 |
Fixed additional interrupt logic bug,
Optimized several blocks - including ALU, stack, program counter, and data path. |
jshamlet |
5026d 16h |
/open8_urisc/trunk/ |
| 154 |
Fixed problem with missing data path override in interrupt logic. Should resolve issues with processor crashing when an interrupt occurs as a STO instruction is being executed. |
jshamlet |
5031d 19h |
/open8_urisc/trunk/ |
| 153 |
Fixed bug in interrupt logic that caused stack pointer to increment if interrupt occurred as specific instructions were being decoded,
Fixed bug in interrupt logic where instruction caching would remain enabled during an interrupt, causing improper execution depending on what instruction was in the decode stage as the interrupt is trigered. |
jshamlet |
5058d 15h |
/open8_urisc/trunk/ |
| 152 |
Correct the descriptions for GMSK and SMSK instructions in the Open8 Assembly Language Reference |
khays |
5066d 17h |
/open8_urisc/trunk/ |
