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[/] [open8_urisc/] [trunk] - Rev 282

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282 Modified the SDLC core transmit states to have consistent naming. jshamlet 1293d 05h /open8_urisc/trunk
281 Added pre-initialization to the dual-port RAM signals. jshamlet 1293d 07h /open8_urisc/trunk
280 Got rid of silly aliases that connected the dual-port memory and the arbitration logic. jshamlet 1293d 08h /open8_urisc/trunk
279 More comment cleanup jshamlet 1294d 05h /open8_urisc/trunk
278 Flattened the SDLC interface to fewer files and eliminated the package file. jshamlet 1294d 23h /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 1295d 05h /open8_urisc/trunk
276 More comment fixes jshamlet 1330d 02h /open8_urisc/trunk
275 Fixed a minor comment error. jshamlet 1331d 20h /open8_urisc/trunk
274 Updated comments with more corrections jshamlet 1332d 03h /open8_urisc/trunk
273 Updated comments with corrections jshamlet 1332d 04h /open8_urisc/trunk
272 Updated the HTML documentation to reflect the removed generic. jshamlet 1342d 04h /open8_urisc/trunk
271 Removed deleted generic define. jshamlet 1342d 04h /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 1342d 04h /open8_urisc/trunk
269 Modified the write data path to use separate enumerated states rather than reuse the .reg field to improve performance. jshamlet 1344d 17h /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 1344d 18h /open8_urisc/trunk
267 Corrected the file description to indicate this is an example package. jshamlet 1344d 18h /open8_urisc/trunk
266 Accidentally uploaded incorrect example file for Open8_cfg.vhd jshamlet 1344d 18h /open8_urisc/trunk
265 Fixed a bug where "reg" wasn't being initialized with Poly_Init at reset. jshamlet 1437d 03h /open8_urisc/trunk
264 Updated comments jshamlet 1447d 00h /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 1447d 00h /open8_urisc/trunk

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