Rev |
Log message |
Author |
Age |
Path |
224 |
Finished new Open8 bus record, which now includes the clock, reset and a microsecond tick. The CPU now accepts a clock and pll_locked signal, which it uses to generate the system reset in the bus record. It also contains a simple microsecond counter to feed the usec_tick in the record. This logic was removed from the real time clock and system timer entities, which now use the global version. Bus connections should be dramatically simplified, as only the read logic and interrupts are still run as separate signals. |
jshamlet |
1630d 14h |
/open8_urisc/trunk/VHDL/o8_epoch_timer.vhd |
223 |
Added an OPEN8_BUS_TYPE record to simplify connection to Open8 modules. The CPU now passes and Open8_Bus out, which supplies the bus address, write enable, write data, and read enable. Read data and interrupts are still handled as separate signals, since they are muxed/connected at the next level up. |
jshamlet |
1631d 07h |
/open8_urisc/trunk/VHDL/o8_epoch_timer.vhd |
222 |
Created a modified version of the epoch timer with a 32-bit, 1-uS resolution timer/comparator. |
jshamlet |
1631d 12h |
/open8_urisc/trunk/VHDL/o8_epoch_timer.vhd |
217 |
Broke out the vdsm8 as a separate entity, since it is used in several places,
Even MORE code cleanup. |
jshamlet |
1632d 08h |
/open8_urisc/trunk/VHDL/o8_epoch_timer.vhd |
213 |
Code and comment cleanup |
jshamlet |
1636d 09h |
/open8_urisc/trunk/VHDL/o8_epoch_timer.vhd |
212 |
Fixed issue with rewritten epoch timer not clearing alarm on set point write. |
jshamlet |
1636d 14h |
/open8_urisc/trunk/VHDL/o8_epoch_timer.vhd |
209 |
Fixed an issue in the PIT timer that caused an immediate interrupt on interval write,
Fixed an issue in the epoch timer that resulted in a spurious interrupt due to extra LSB's being set by default in the set point register,
While cleaning elsewhere, founding a spacing issue in the CPU HDL,
Added a 4k ROM and MW core. |
jshamlet |
1638d 03h |
/open8_urisc/trunk/VHDL/o8_epoch_timer.vhd |
194 |
Cleaned up licensing sections |
jshamlet |
1646d 09h |
/open8_urisc/trunk/VHDL/o8_epoch_timer.vhd |
191 |
Cleaned up comments, added back the OPEN8_NULLBUS constant, and added some new modules for ADCs and LCD displays.
Also made the button input module more configurable by moving the debounce code to a separate entity and using generics to instantiate it. |
jshamlet |
1646d 10h |
/open8_urisc/trunk/VHDL/o8_epoch_timer.vhd |
189 |
Merged changes from private repository,
added ceil_log2 function to Open8_pkg, since it is used to calculate RAM vectors,
cleaned up comments and removed local copies of the ceil_log2 function from peripherals. |
jshamlet |
1659d 08h |
/open8_urisc/trunk/VHDL/o8_epoch_timer.vhd |
184 |
More file/entity renaming to match private versions. |
jshamlet |
1666d 10h |
/open8_urisc/trunk/VHDL/o8_epoch_timer.vhd |
173 |
Added a couple of useful interfaces for detecting button presses and clock changes. |
jshamlet |
3191d 08h |
/open8_urisc/trunk/VHDL/o8_etc.vhd |
172 |
General code cleanup |
jshamlet |
3191d 08h |
/open8_urisc/trunk/VHDL/o8_etc.vhd |
171 |
Fixed comments for offsets 0x0 - 0x3 to indicate the read value |
jshamlet |
3191d 08h |
/open8_urisc/trunk/VHDL/o8_etc.vhd |
170 |
Added 24-bit resolution epoch timer / alarm clock |
jshamlet |
3191d 08h |
/open8_urisc/trunk/VHDL/o8_etc.vhd |