| Rev |
Log message |
Author |
Age |
Path |
| 283 |
Altered SDLC bitclock check on TX to NOT block when tested by software, but to instead ignore packet write requests if BClk_Okay is low. This allows software to continue checking BClk_Okay in a polling loop. |
jshamlet |
1308d 10h |
/open8_urisc/trunk |
| 282 |
Modified the SDLC core transmit states to have consistent naming. |
jshamlet |
1308d 10h |
/open8_urisc/trunk |
| 281 |
Added pre-initialization to the dual-port RAM signals. |
jshamlet |
1308d 13h |
/open8_urisc/trunk |
| 280 |
Got rid of silly aliases that connected the dual-port memory and the arbitration logic. |
jshamlet |
1308d 14h |
/open8_urisc/trunk |
| 279 |
More comment cleanup |
jshamlet |
1309d 11h |
/open8_urisc/trunk |
| 278 |
Flattened the SDLC interface to fewer files and eliminated the package file. |
jshamlet |
1310d 05h |
/open8_urisc/trunk |
| 277 |
Fixed documentation errors related to flags. The UPP ALU instruction only alters the C flag, not the Z or N flags. This implies that using indexed loads or stores with auto post-increment will potentially alter the C flag. |
jshamlet |
1310d 11h |
/open8_urisc/trunk |
| 276 |
More comment fixes |
jshamlet |
1345d 07h |
/open8_urisc/trunk |
| 275 |
Fixed a minor comment error. |
jshamlet |
1347d 01h |
/open8_urisc/trunk |
| 274 |
Updated comments with more corrections |
jshamlet |
1347d 08h |
/open8_urisc/trunk |
| 273 |
Updated comments with corrections |
jshamlet |
1347d 10h |
/open8_urisc/trunk |
| 272 |
Updated the HTML documentation to reflect the removed generic. |
jshamlet |
1357d 09h |
/open8_urisc/trunk |
| 271 |
Removed deleted generic define. |
jshamlet |
1357d 09h |
/open8_urisc/trunk |
| 270 |
Moved CPU internal constants to o8_cpu.vhd and replace the generic that set the RSP direction flag with a constant instead. This removes the need to expose internal architectural flags externally.
Also added a hard-coded version register that takes a major and minor value as bytes using generics. This is a read-only register to the CPU. |
jshamlet |
1357d 09h |
/open8_urisc/trunk |
| 269 |
Modified the write data path to use separate enumerated states rather than reuse the .reg field to improve performance. |
jshamlet |
1359d 23h |
/open8_urisc/trunk |
| 268 |
Added a 16-input external interrupt manager and dedicated SPI tx-only transmitter (for use with DACs, etc.). Also updated the soft-DACs with cleaned up HDL. |
jshamlet |
1360d 00h |
/open8_urisc/trunk |
| 267 |
Corrected the file description to indicate this is an example package. |
jshamlet |
1360d 00h |
/open8_urisc/trunk |
| 266 |
Accidentally uploaded incorrect example file for Open8_cfg.vhd |
jshamlet |
1360d 00h |
/open8_urisc/trunk |
| 265 |
Fixed a bug where "reg" wasn't being initialized with Poly_Init at reset. |
jshamlet |
1452d 08h |
/open8_urisc/trunk |
| 264 |
Updated comments |
jshamlet |
1462d 06h |
/open8_urisc/trunk |
| 263 |
Fixed a very old bug in the CPU core where autoincrements weren't affecting the upper register in the pair, causing it to loop around the lower 256 bytes. This only affected LDX/LDO, as the proper ALU signals were being generated in STO/STX and UPP. Wow, that bug has been in there for AGES.
Also separated the SDLC TX and RX interrupts so that they could be handled separately. |
jshamlet |
1462d 06h |
/open8_urisc/trunk |
| 262 |
Added comments to LCD controllers - specifically that reading either register 0 or 1 will return the ready status. This code was already present, but not mentioned in the register map. |
jshamlet |
1471d 09h |
/open8_urisc/trunk |
| 261 |
Increased delay timer to 7 bits for button press detection. |
jshamlet |
1478d 09h |
/open8_urisc/trunk |
| 260 |
Added missing comments for Sequential_Interrupts generic, as well as comments explaining portions of the CPU operations. |
jshamlet |
1491d 08h |
/open8_urisc/trunk |
| 259 |
Fixed issue where Write_Fault wasn't defaulting to '0' when Write_Protect was set to FALSE,
Added a pulse interval measurement entity,
Fixed comments. |
jshamlet |
1491d 10h |
/open8_urisc/trunk |
| 258 |
Fixed write bug in o8_ltc2355_2p.vhd, added a newer Open8_cfg.vhd, and the sys_tick.vhd utility entity. |
jshamlet |
1492d 08h |
/open8_urisc/trunk |
| 257 |
Fixed misnamed signal in o8_7seg.vhd and added a replacement switch interface that handles both static and pushbutton switches. |
jshamlet |
1492d 08h |
/open8_urisc/trunk |
| 256 |
Removed unused generic from the status_led.vhd and cleaned up comments on the CPU |
jshamlet |
1492d 09h |
/open8_urisc/trunk |
| 255 |
Modified code to make ModelSim happy (It didn't like the generate blocks for some reason). Also added a block describing the new generic. |
jshamlet |
1492d 14h |
/open8_urisc/trunk |
| 254 |
Simplified the ISR address logic so that the upper 12 bits are constant (set by generic) and only the lower 4 bits are registered/computed. |
jshamlet |
1493d 05h |
/open8_urisc/trunk |
