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Author SHA1 Message Date
David Banks
b9d6359be4 Checked in initial work on lx9_dave target (see full comment) 
The .ucf files look like they are for a completely different board
(the lx9 starter board, not the epizza board). So these need to be
reworked completely.

Also, the following signals needs adding to the top level 6502 design:
- OEAH (output)
- OEAL (output)
- OED  (output)
- ML   (output)
- VP   (output)
- BE   (input)

The system will not work without some attention to these.

Minimally, in the FPGA design we can tie them as follows:
- OEAH (output) - set to 0 (address bus always enabled)
- OEAL (output) - set to 0 (ditto)
- OED  (output) - set to !phi2 (data bus driven in second half of clock)
- ML   (output) - set output to 1 (and fit P3 link between pins 2 and 3)
- VP   (output) - set output to 1 (and don't fit P4 link)
- BE   (input)  - ignore input

The current adapter design does not fully support the implementation of BE
as it does not provide a way to tristate RNW. That would require the addition
of a seperate level shifter, e.g. a 74LVC1G125

Change-Id: I1bf11c5ef8318c5ebfa942cb4bd07f750d0b370d
 2018-11-20 09:42:58 +00:00
David Banks
c1b0902f96 6502: Change din sampling from Phi0_b to Phi0_a 
Change-Id: Id1cf604cfa61dba7aae8da670a38e460a059e7bb
 2018-02-15 13:06:25 +00:00
David Banks
40cac3c401 Updated Makefile for 64-bit build 
Change-Id: Ieaa309d30463209cd0e9c1aa6e6b23cbec8e92b0
 2018-02-15 13:05:49 +00:00
David Banks
e45e4423af Added lx9_jason_flipped to build 
Change-Id: I6c0a140a1e5229dca8eddc770a232712de17cd4b
 2017-09-22 22:57:54 +01:00
David Banks
7954f86e41 Added build for a flipped version of Jason's level shifter, so USB comes out at the pin 1 end (better for Beeb) 
Change-Id: Icd48522640507469b43ca3545fa1c46f88b0f0bb
 2017-08-09 18:16:11 +01:00
David Banks
168e5637e9 Pinout change for LX9: DIP pins 37 and 38 needed swapping 
Change-Id: I3f96f2d7cd8a8640e4a6c60466067daccf1e0590
 2017-08-09 16:37:41 +01:00
David Banks
a4aa6df31a Added new top level generics to 6502 and 6809 designs 
Change-Id: I14d70471b97948c165210bebad88b60965531207
 2017-08-01 09:25:12 +01:00
David Banks
f2974d12df Swapped names of sw_interrupt_n and sw_reset_n (as they were wrong way around) 
Change-Id: I8819b4898be3beb36ec7f2ecb97f6797a7ab03b2
 2017-08-01 08:18:20 +01:00
David Banks
6415a81a40 On LX9 board, updated Tx=51 and Rx=55 
Change-Id: I5bcd032eab29ef93d36e8011fee673028042483f
 2017-07-29 19:55:27 +01:00
David Banks
f84780b304 Minor change to release.sh script 
Change-Id: I0f73afe8967909be1a7a3784c64555df2ed4eb16
 2017-07-28 15:07:12 +01:00
David Banks
7453cf4f9f LX9 support: massive refactor of the build system 
Change-Id: I75ff141a0d3b2c30a37d8f0e497f4f923e302b8b
 2017-07-26 14:59:20 +01:00
David Banks
78adf0030b LX9 support: corrected pin assignment in Z80CpuMonLX9Jason.ucf 
Change-Id: Iacf21daea16b68a3886eb68618016e76c8dc0998
 2017-07-26 09:45:01 +01:00
David Banks
79d890bcb9 LX9 support: in Z80CpuMon made the switch/led polarity configurable with generics 
Change-Id: I026bc8e56fe760b453edf970b33f6897a695d0d2
 2017-07-25 19:18:59 +01:00
David Banks
17acd5afdd LX9 support: updated Z80CpuMon ucf file - not final yet! 
Change-Id: I8dbf4f4012c3b43d8bdf07ca707d6d8b6ef8a1d1
 2017-07-25 19:17:55 +01:00
David Banks
0da1fa06bb LX9 support: work in progress 
Change-Id: I76249db20f992f92c5fc0454f698c40e578b5e54
 2017-07-25 17:34:19 +01:00
David Banks
c8f3d1f7f3 PCB: Cosmetic adjustment to IC positions 
Change-Id: Iacbcf8f106ab071ac2593f6fbe1cc5fea7863dbd
 2017-07-25 16:17:04 +01:00
David Banks
8bab6de3ab PCB: clened up silk screen 
Change-Id: I8b0d889cf32f0a2902b8bbf78c789f4d55838c1f
 2017-07-25 15:56:00 +01:00
David Banks
6893749ac1 Rotate board 180 + add mounting holes 
Change-Id: Ic19cff3e88082d146cbc73c1cf88c1302ec57baa
 2017-07-25 15:13:51 +01:00
David Banks
1c1505b2ad Initial check-in of an 6502 specfic level shifter for the LX9 Core board 
Change-Id: I439efad67f8b4152f7a149ea6c2af9056fc2b4ab
 2017-07-25 13:53:54 +01:00
David Banks
4d5f930a7f Rebuilt xc3s500e builds of v0.73 using seperate ip_core dir 
Change-Id: Ie38713b06da523c74f348e480ab8e6c95d5a86bd
 2016-10-24 18:01:44 +01:00
David Banks
74d3618b1a Seperate ipcore directories for 250 and 500 parts 
Change-Id: I726ff1bd3302a8918a71f069c0abf3251fe622aa
 2016-10-24 17:59:06 +01:00
David Banks
cc0e8fb051 Added xc3s500e builds of v0.73 
Change-Id: If4fa6d5293f7914f9aee4a944c9f407856c35372
 2016-10-24 14:35:48 +01:00
David Banks
4acc64bd51 Fixed Z80 mcs file (somehow a xcs3500e build was checked in) 
Change-Id: I6c60a382073e7c1029882fff03e16fa4c8f821c8
 2016-10-24 14:34:37 +01:00
David Banks
f64641f99c Added build scripts for xc3s500e 
Change-Id: Icc7990c3ee257d1511fa478fd0d2b3575362eb29
 2016-10-24 14:24:18 +01:00
David Banks
0692e204e8 Added 0.73 binary release 
Change-Id: Id00fe1189acf8c65af5d9ce4d09200a752dad58a
 2016-10-20 20:03:19 +01:00
David Banks
1d60e683b6 v0.73 - added srecord upload command 
Change-Id: I6b7f9c2a43794c7a6b8f7abd65fac33eb691dbf4
 2016-09-09 11:31:50 +01:00
David Banks
ceaeb932a7 Clean up white space 
Change-Id: I126fff11794dbd3d47c4dd87b9410b49212199ca
 2016-09-08 14:16:10 +01:00
David Banks
6291faa4bd Updated to 0249 of the Z80 core by TobiFlex to fix issues with Spectrum Keyboard 
Change-Id: I2d92c541cdb7feaad84bd3d37ec125594b6b47a8
 2016-08-22 14:46:41 +01:00
David Banks
de6f722978 Adjusted Din sampling point ~40ns later so it co-incides with Phi2 
Change-Id: Ibdd44b83a139b6560efc886e95714ee91daef3dc
 2016-08-01 16:34:47 +01:00
David Banks
ba9364b2b7 Updated README 
Change-Id: If88d67358c9e1da43627c2108a1f08a5da666d96
 2016-07-15 15:21:28 +01:00
David Banks
b429877e6a Added Blank design; removed old .bit files 
Change-Id: Id50f35c6ce4116034b853a76795b2568bf564808
 2016-07-15 15:14:12 +01:00
David Banks
759e800d8d Added 0.72 release MCS files 
Change-Id: I9dfb0333114524b2f793f1eb4c328345a0be3617
 2016-07-15 15:07:34 +01:00
David Banks
92680588cb Improvements to the multi-platform build scripts 
Change-Id: I403d566a3f022451d41f158b499a25941b2c7e0d
 2016-07-13 18:19:41 +01:00
David Banks
5410c32db3 Eliminated some warnings - changes mostly cosmetic 
Change-Id: Ic7a7a107f9343bac2b49512d92ee2ad8f13c8bb2
 2015-11-29 12:22:13 +00:00
David Banks
de16b3af1a Eliminated some warnings - changes mostly cosmetic 
Change-Id: I141b05c932d0736e689ff3a2cb2c90c24c850933
 2015-11-29 12:06:42 +00:00
David Banks
847b781708 Forgot to push changes to Z80 .xise file 
Change-Id: Ic0ccf2ec51122a3f3f232dcaa4594ca36a9528e2
 2015-11-28 17:33:01 +00:00
David Banks
dd2ea9182b Fixed an incorrect module name 
Change-Id: I952135d7be04e332ca4cc5de7f6491bc0fedf5ec
 2015-11-28 17:32:08 +00:00
David Banks
e63266f720 Made AVR XPM and XDM more generic 
Change-Id: I0025d56d4ba7fa3e20d73f09ac51068ffd1859c5
 2015-11-28 17:22:23 +00:00
David Banks
cc6c062b4b Updated XDM2Kx8 to a more portable implementation 
Change-Id: I37cbe56b7b0113e24855eb1c0fcf7bbe006eefd3
 2015-11-28 11:19:27 +00:00
David Banks
d70c378245 Only return will interrupt continue; version now 0.72 
Change-Id: I6fc1fb0b268facf1fe80dd9f45f1790a53dd33e9
 2015-11-15 13:42:47 +00:00
David Banks
a785d7e73f Refactored AtomFast6502 to use new MOS6502CpuMonCore - works in new Atom at 4MHz and with tube 
Change-Id: I73c769919e2634a4656a6edec2c5a1100bd70083
 2015-11-15 11:50:06 +00:00
David Banks
ffdd038a8b ICE-T65 - ignore control characters on serial input; version now 0.71 
Change-Id: If18267cb8436637ab04ee792e4f454cac6ecb70e
 2015-11-15 11:38:01 +00:00
David Banks
55c8889881 Updated reset output to avoid the use of a tristate signal in BusMonCore 
Change-Id: I3f49317689eb5808a5edb5fe5b10552d01a3db59
 2015-11-15 11:37:50 +00:00
David Banks
dc6165f826 Cosmetic tweaks to avoid warnings to Quartus 
Change-Id: I9f044a50d599dfcd3d3b7bd46f6e99e1ef3e92b6
 2015-11-14 13:36:15 +00:00
David Banks
568fd2906d Fixed AlanD core 65C02 bugs: D was being set in IRQ/BRK; sync was inferring a latch 
Change-Id: Ia7163e996c403a1caae04df10de3d7a42a91b45c
 2015-11-11 13:07:19 +00:00
David Banks
6aeb0c7b8a Refactor: 2nd stage - bug fixes 
Change-Id: Ic3bd520d0cc8b74f33068c53085229506d6968b2
 2015-10-31 18:31:41 +00:00
David Banks
99c5f951d1 Refactor: 2nd stage 
Change-Id: I6959bbc88082cc46930f907378d42adf1abf180e
 2015-10-31 14:29:14 +00:00
David Banks
b563a030ee Refactor: 1st stage 
Change-Id: I8889ff76ce802099fae67c147e110356adbd23ac
 2015-10-31 13:45:09 +00:00
David Banks
8a857ae45e Experimental AtomFast6502 adding bus mon function 
Change-Id: Ib5115d9e7b736c45bb46a0a063325a0173b6f823
 2015-10-31 11:46:40 +00:00
David Banks
eaf6f90ab6 ICE T65: Fixed the single stepping issue with AlanD's core (sync bug); increased CCLK rate to 25MHz 
Change-Id: I226a63a10b80973001f4b0ee825dcecadaece8cb
 2015-10-27 19:34:02 +00:00