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[/] [open8_urisc/] [trunk/] - Rev 288

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Rev Log message Author Age Path
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 1142d 02h /open8_urisc/trunk/
287 Fixed mangled comments and revisioning dates. jshamlet 1143d 01h /open8_urisc/trunk/
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 1143d 01h /open8_urisc/trunk/
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 1150d 04h /open8_urisc/trunk/
284 Corrected the vhdl unit name and description for o8_7seg.vhd jshamlet 1263d 16h /open8_urisc/trunk/
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 1267d 03h /open8_urisc/trunk/
282 Modified the SDLC core transmit states to have consistent naming. jshamlet 1267d 03h /open8_urisc/trunk/
281 Added pre-initialization to the dual-port RAM signals. jshamlet 1267d 06h /open8_urisc/trunk/
280 Got rid of silly aliases that connected the dual-port memory and the arbitration logic. jshamlet 1267d 07h /open8_urisc/trunk/
279 More comment cleanup jshamlet 1268d 04h /open8_urisc/trunk/
278 Flattened the SDLC interface to fewer files and eliminated the package file. jshamlet 1268d 22h /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 1269d 04h /open8_urisc/trunk/
276 More comment fixes jshamlet 1304d 00h /open8_urisc/trunk/
275 Fixed a minor comment error. jshamlet 1305d 19h /open8_urisc/trunk/
274 Updated comments with more corrections jshamlet 1306d 01h /open8_urisc/trunk/
273 Updated comments with corrections jshamlet 1306d 03h /open8_urisc/trunk/
272 Updated the HTML documentation to reflect the removed generic. jshamlet 1316d 03h /open8_urisc/trunk/
271 Removed deleted generic define. jshamlet 1316d 03h /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 1316d 03h /open8_urisc/trunk/
269 Modified the write data path to use separate enumerated states rather than reuse the .reg field to improve performance. jshamlet 1318d 16h /open8_urisc/trunk/

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