Rev |
Log message |
Author |
Age |
Path |
295 |
Undoing previous revision. UART was fine, bug reporter was not. |
jshamlet |
1056d 19h |
/open8_urisc |
294 |
Fixed an ancient bug in the parity logic that had the parity inverted. |
jshamlet |
1057d 00h |
/open8_urisc |
293 |
Fixed formatting issue in o8_sync_serial where tabs were inserted instead of spaces and fixed column spacing as a result (purely cosmetic) |
jshamlet |
1076d 00h |
/open8_urisc |
292 |
Updated the o8_trig_delay entity by:
1) Added a global interrupt enable,
2) Added the ability to trigger on both the pre- and post-arm trigger input
3) Added the ability to read the external input on offset 7 |
jshamlet |
1146d 23h |
/open8_urisc |
291 |
Added Notepad++ language definition file for the Open8_II ISA |
jshamlet |
1189d 13h |
/open8_urisc |
290 |
Added an additional generic "Rotation_Ignores_Carry" that removes the carry logic from the ROL/ROR instructions such that they now rotate 'normally',
Added an alias for PSR_GP4 named PSR_S, as it is now used to switch the function of the RSP instruction. The internal opcode hasn't changed, but it allows assembly code to use PSR_S or BRS/BNS when performing RSP related operations. |
jshamlet |
1189d 13h |
/open8_urisc |
289 |
Added back the delay for the cursor home command, since it is slow on most Hitachi compatible LCD panels. |
jshamlet |
1207d 00h |
/open8_urisc |
288 |
Removed hard-wired R/Wn output and replaced it with a note that the R/Wn line must be tied low either in firmware or on the board. |
jshamlet |
1207d 20h |
/open8_urisc |
287 |
Fixed mangled comments and revisioning dates. |
jshamlet |
1208d 20h |
/open8_urisc |
286 |
Added initial cut of a "universal" character LCD driver. Allows for adjustment of address setup, enable high, and cycle times. Also has built-in timers for handling timing on certain commands. |
jshamlet |
1208d 20h |
/open8_urisc |
285 |
Added checksum byte to vector tx/rx to avoid issues with serial line noise glitching the receiver. Also modified the transmitted to take any generic argument, rather than canned arguments. |
jshamlet |
1215d 23h |
/open8_urisc |
284 |
Corrected the vhdl unit name and description for o8_7seg.vhd |
jshamlet |
1329d 10h |
/open8_urisc |
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 |
1332d 22h |
/open8_urisc |
282 |
Modified the SDLC core transmit states to have consistent naming. |
jshamlet |
1332d 22h |
/open8_urisc |
281 |
Added pre-initialization to the dual-port RAM signals. |
jshamlet |
1333d 01h |
/open8_urisc |
280 |
Got rid of silly aliases that connected the dual-port memory and the arbitration logic. |
jshamlet |
1333d 01h |
/open8_urisc |
279 |
More comment cleanup |
jshamlet |
1333d 22h |
/open8_urisc |
278 |
Flattened the SDLC interface to fewer files and eliminated the package file. |
jshamlet |
1334d 16h |
/open8_urisc |
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 |
1334d 22h |
/open8_urisc |
276 |
More comment fixes |
jshamlet |
1369d 19h |
/open8_urisc |
275 |
Fixed a minor comment error. |
jshamlet |
1371d 13h |
/open8_urisc |
274 |
Updated comments with more corrections |
jshamlet |
1371d 20h |
/open8_urisc |
273 |
Updated comments with corrections |
jshamlet |
1371d 22h |
/open8_urisc |
272 |
Updated the HTML documentation to reflect the removed generic. |
jshamlet |
1381d 21h |
/open8_urisc |
271 |
Removed deleted generic define. |
jshamlet |
1381d 21h |
/open8_urisc |
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 |
1381d 21h |
/open8_urisc |
269 |
Modified the write data path to use separate enumerated states rather than reuse the .reg field to improve performance. |
jshamlet |
1384d 11h |
/open8_urisc |
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 |
1384d 11h |
/open8_urisc |
267 |
Corrected the file description to indicate this is an example package. |
jshamlet |
1384d 11h |
/open8_urisc |
266 |
Accidentally uploaded incorrect example file for Open8_cfg.vhd |
jshamlet |
1384d 11h |
/open8_urisc |