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[/] [System09/] [trunk/] [rtl/] - Rev 205

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205 A new version of VDU8 that uses the parameterized xilinx ram "block_spram" for the video memory. davidgb 1203d 17h /System09/trunk/rtl
204 patched up ram for zybo use davidgb 1203d 17h /System09/trunk/rtl
203 Added a parameterized ram model. davidgb 1203d 17h /System09/trunk/rtl
202 Updated Zybo design to reintroduce VDU8 driving the PmodVGA on pmod connectors JC+JD.
This version also uses PmodUSBUART on JE. To use PmodRS232 you must edit the .ucf file and select the appropriate pin LOCs.		 davidgb 1203d 18h /System09/trunk/rtl
201 A copy of XSA-3S1000.ucf and System09_Xess_XSA-3S1000.vhd that have dual serial ports with no handshake. davidgb 1210d 12h /System09/trunk/rtl
200 Started adding back in video support - VDU8 instantiated and RGBHV bits sent to Pmod JE port. davidgb 1217d 09h /System09/trunk/rtl
199 Add in full RS-232 handshake for PmodUSBUART. davidgb 1218d 11h /System09/trunk/rtl
198 Update UCF file to select Pmod pinout compatible with the PmodUSBUART.
To use, make sure PmodUSBUART has JP1 as "LCL". Connect the usb to the uart and open the terminal program. Test the transmission via the LED on the Pmod. Then (carefully) plug into Pmod port on Zybo.		 davidgb 1218d 12h /System09/trunk/rtl
197 Updates from John Kent:
-- 4.5 John Kent 2012-02-04 Re-arranged Rx & Tx Baud clock edge detect.
-- 4.6 John Kent 3021-01-30 Double sample RxC, TxC, and RxD with cpu_clk
-- for 125MHz Clock on Zybo Z7 board.		 davidgb 1225d 09h /System09/trunk/rtl
196 Working system boots to SBUG. Uses RS232 Pmod (no handshake) and 57600,8,N,1 (no handshake) hyperterm. davidgb 1225d 09h /System09/trunk/rtl
195 Switched to using the UART over usb for the console port. davidgb 1225d 10h /System09/trunk/rtl
194 Finally have a working board. davidgb 1225d 10h /System09/trunk/rtl
193 Fixed part of the ACIA problem - the polarity of the NMI was wrong. Now get clean output but input to the ACIA is not working. Also fixed the 32k addressing davidgb 1225d 14h /System09/trunk/rtl
192 Fixed part of the ACIA problem - the polarity of the NMI was wrong. Now get clean output but input to the ACIA is not working. davidgb 1225d 14h /System09/trunk/rtl
189 Remove unused file. Created by ISE gui. davidgb 1232d 05h /System09/trunk/rtl
188 update options to match what the ISE gui does davidgb 1232d 05h /System09/trunk/rtl
187 Partially works. Garbage on the ACIA due to baud clock problems. davidgb 1232d 10h /System09/trunk/rtl
186 Somewhat functional boot to SBUG. ACIA freq is wrong but sometimes works if hyperterm set to 115kBps davidgb 1232d 13h /System09/trunk/rtl
185 Reverted back to the single-step version - something was broken davidgb 1232d 15h /System09/trunk/rtl
180 removed xdc file since ISE 14.7 does not support XDC davidgb 1232d 16h /System09/trunk/rtl
179 Zybo port done to the same point as the Atlys port. The hardware appears to work but the ACIA is not communicating properly. davidgb 1232d 16h /System09/trunk/rtl
178 work on constraints file davidgb 1233d 03h /System09/trunk/rtl
177 work on zybo port davidgb 1233d 04h /System09/trunk/rtl
176 Don't delete system09_impact.cmd on 'clean' davidgb 1233d 05h /System09/trunk/rtl
175 Corrected RS-232 pin connections. Cleaned up code. Removed debug code.
System boots but the baud clock must be wrong - get garbage on hyperterm.		 davidgb 1233d 05h /System09/trunk/rtl
174 Added button debounce. Single-step button. multiplex LED to show nibbles of addr and data for debug. Confirmed that CPU is reading from sys09swt.vhd SBug ROM correctly. Still need to debug ACIA output. davidgb 1233d 08h /System09/trunk/rtl
173 Add another 16k BRAM for 56K total memory davidgb 1235d 04h /System09/trunk/rtl
172 Add 16k RAM davidgb 1235d 04h /System09/trunk/rtl
171 remove old Xess files davidgb 1235d 09h /System09/trunk/rtl
170 More debugging. Can now see cpu_addr incrementing correctly.
Added 32k BRAM 0000-7FFF.		 davidgb 1235d 09h /System09/trunk/rtl

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