GitHub - mikestir/fpga-bbc: Acorn BBC Micro on an Altera DE1 FPGA board

1 Branch 1 Tag

Name	Name	Last commit message	Last commit date
Latest commit Mike Stirling Updated readme Jan 13, 2016 c2e7e51 · Jan 13, 2016 History 24 Commits
T65	T65	Updated T65 CPU core from https://svn.pacedev.net/repos/pace/sw/src/c…	Jul 29, 2011
sn76489-1.0	sn76489-1.0	Swapped DFS ROM to original Acorn version and added two composite ROM…	Aug 7, 2011
CII_Starter_pin_assignments.csv	CII_Starter_pin_assignments.csv	Added pin definitions for SD card interface. Fixed bug in 6522 shift-…	Jul 31, 2011
README	README	Updated readme	Jan 13, 2016
bbc_micro.qpf	bbc_micro.qpf	Initial commit. Some modules imported from experimental 6502 platform…	Jul 12, 2011
bbc_micro_de1.qsf	bbc_micro_de1.qsf	...and the rest of the previous commit	Sep 18, 2011
bbc_micro_de1.vhd	bbc_micro_de1.vhd	Updated license text	Sep 18, 2011
bbc_micro_de1_tb.vhd	bbc_micro_de1_tb.vhd	Updated license text	Sep 18, 2011
debugger.vhd	debugger.vhd	Updated license text	Sep 18, 2011
i2c_loader.vhd	i2c_loader.vhd	Updated license text	Sep 18, 2011
i2s_intf.vhd	i2s_intf.vhd	Updated license text	Sep 18, 2011
keyboard.odg	keyboard.odg	Added license notice to the top of all source files	Aug 21, 2011
keyboard.png	keyboard.png	Added license notice to the top of all source files	Aug 21, 2011
keyboard.txt	keyboard.txt	Work in progress. Added PS/2 keyboard interface, hardware debugger. I…	Jul 29, 2011
keyboard.vhd	keyboard.vhd	Updated license text	Sep 18, 2011
m6522.vhd	m6522.vhd	Get rid of an inferred latch in 6522. Doesn't seem to break anything!	Aug 7, 2011
m6522_tb.vhd	m6522_tb.vhd	Updated license text	Sep 18, 2011
mc6845.vhd	mc6845.vhd	Updated license text	Sep 18, 2011
pll32.ppf	pll32.ppf	Added top-level, PLL, MOS ROM and CRTC. CRTC seems to behave strangel…	Jul 16, 2011
pll32.qip	pll32.qip	Added top-level, PLL, MOS ROM and CRTC. CRTC seems to behave strangel…	Jul 16, 2011
pll32.vhd	pll32.vhd	Fixed SRAM routing logic	Jul 16, 2011
ps2_intf.vhd	ps2_intf.vhd	Updated license text	Sep 18, 2011
saa5050.vhd	saa5050.vhd	Updated license text	Sep 18, 2011
saa5050_rom.qip	saa5050_rom.qip	Fixed cursor generation in VIDPROC. Added SAA5050 for MODE 7 support.…	Aug 7, 2011
saa5050_rom.vhd	saa5050_rom.vhd	Fixed cursor generation in VIDPROC. Added SAA5050 for MODE 7 support.…	Aug 7, 2011
seg7.vhd	seg7.vhd	Updated license text	Sep 18, 2011
vidproc.vhd	vidproc.vhd	Updated license text	Sep 18, 2011

Repository files navigation

Acorn BBC Micro on an Altera DE1 Cyclone II FPGA board
------------------------------------------------------

http://www.mike-stirling.com/retro-fpga/bbc-micro-on-an-fpga/
(C) 2011-2016 Mike Stirling

Uses components from:

T65 implementation from http://www.fpgaarcade.com/resources/T65_v302.zip (bug fixes from PACE dev)
M6522 implementation from FPGA arcade VIC20 design.  Various bug fixes added locally.
SN76489 implementation by Arnim Laeuger and obtained from FPGA arcade


-- BBC Micro for Altera DE1
--
-- Copyright (c) 2011 Mike Stirling
--
-- All rights reserved
--
-- Redistribution and use in source and synthezised forms, with or without
-- modification, are permitted provided that the following conditions are met:
--
-- * Redistributions of source code must retain the above copyright notice,
--   this list of conditions and the following disclaimer.
--
-- * Redistributions in synthesized form must reproduce the above copyright
--   notice, this list of conditions and the following disclaimer in the
--   documentation and/or other materials provided with the distribution.
--
-- * Neither the name of the author nor the names of other contributors may
--   be used to endorse or promote products derived from this software without
--   specific prior written agreement from the author.
--
-- * License is granted for non-commercial use only.  A fee may not be charged
--   for redistributions as source code or in synthesized/hardware form without 
--   specific prior written agreement from the author.
--
-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-- THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-- PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE
-- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-- POSSIBILITY OF SUCH DAMAGE.