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* ...and the rest of the previous commitMike Stirling2011-09-181-5/+2
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* Added license notice to the top of all source filesMike Stirling2011-08-211-4/+3
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* Fixed cursor generation in VIDPROC. Added SAA5050 for MODE 7 support. ↵Mike Stirling2011-08-071-0/+1
| | | | Added tools for generating SAA5050 character ROM.
* Fixed missing gate in DISEN which meant that blank lines in modes 3 and 6 ↵Mike Stirling2011-08-021-0/+1
| | | | weren't blank. Hopefully fixed handling of interlaced sync+video mode in CRTC ready for SAA5050 implementation.
* Added sound generator support and interface to WM8731L audio codec. Uses ↵Mike Stirling2011-07-311-8/+17
| | | | SN76489 implementation from FPGA arcade.
* Added pin definitions for SD card interface. Fixed bug in 6522 ↵Mike Stirling2011-07-311-0/+8
| | | | shift-register implementation (shift on CB1 rising edge should occur even in SR disabled mode). Works with MMBEEB SD card interface ROM.
* Work in progress. Added PS/2 keyboard interface, hardware debugger. ↵Mike Stirling2011-07-291-0/+6
| | | | Interrupt test output to 6522 (remove later). Fixed error in pin assignments that blocked access to Flash chip select. Added reading sideways ROMs from external Flash (all but BASIC masked off for now).
* Boots to "BBC Computer" message with dummy keyboard and interrupts disabled ↵Mike Stirling2011-07-251-0/+1
| | | | (something is keeping the interrupt permanently asserted). Need to add paged ROMs in Flash (no more room in the FPGA).
* Work in progress: Added MOS6522 from www.fpgaarcade.com. Added simple_uart ↵Mike Stirling2011-07-171-4/+7
| | | | component in "FRED" for test purposes and added alternative EHBASIC ROM for debugging
* Fixed SRAM routing logicMike Stirling2011-07-161-8/+17
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* Initial commit. Some modules imported from experimental 6502 platform. ↵Mike Stirling2011-07-121-0/+503
Project added for Quartus 9.1