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367 Commits 4 Branches 8 Tags 7.3 MiB
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Author SHA1 Message Date
David Banks
dfeaff9488 6502: minor fixes to lx9_dave, boots in beeb 
Change-Id: I18c909f7586b439d52ecc938d4a9bb7a3e6d76e5
 2019-10-03 13:17:18 +01:00
David Banks
c08084d703 Kicad 6809e: Initial schematic and layout 
Change-Id: I1f3988a54ba62f626f5644a8ad20651948e5fbe7
 2019-10-01 18:37:35 +01:00
David Banks
2a79bc6819 6809: Added special command to inhibit IRQ/FIRQ/NMI 
Change-Id: I9b94fec5f464ecdb6bb0a4cd2a430401a182c929
 2019-10-01 15:21:28 +01:00
David Banks
a1591e4e97 Kicad z80: added manufacturing files 
Change-Id: I90ceb9f1e56ee000a9704d423b4f0298baf85de8
 2019-09-22 16:01:34 +01:00
David Banks
6b2cc8c6ed Kicad 6502: added manufacturing files 
Change-Id: I9ec163c55ca61acad41b0155dbb50ff9f188ccf4
 2019-09-22 16:01:21 +01:00
David Banks
80a3003e86 Kicad 6502: change via sizes 
Change-Id: I8dcd3cc5ac6fae908891b67d9d1c4ddfbb9d1988
 2019-09-22 15:46:52 +01:00
David Banks
08aea66a31 Kicad z80: change via sizes 
Change-Id: I87a36dab22496e9229797047826a10f0319e28f1
 2019-09-22 15:46:43 +01:00
David Banks
cf34e40cd9 Kicad z80: add more power vias 
Change-Id: If1bc8cabde72e3d8b67fdd21e4c5b55accf4307d
 2019-09-22 14:34:11 +01:00
David Banks
9413f4beef Kicad 6502: add more power vias 
Change-Id: I293a495840e0f96dae8bd8866a7b1adfe1f79e49
 2019-09-22 13:52:25 +01:00
David Banks
675e32ca92 Kicad 6502: final tweaks 
Change-Id: Id3d45fc11b7cfa304b3275ba0561da354e969d0a
 2019-09-22 12:43:02 +01:00
David Banks
7d6c003f97 Kicad 6502: renamed v2 to v1 
Change-Id: I493f0bce7b4e01e127eb6f59b814509261079bc2
 2019-09-20 15:41:45 +01:00
David Banks
30e9db9f0a Kicad 6502: deleted old v1 design 
Change-Id: I587c707cf754200da95cf51cbf9c0cd49d687b72
 2019-09-20 15:41:11 +01:00
David Banks
c660ea87be Updated lx9_dave/ice6502 for active level shifter design 
Change-Id: Ib2e98050d02c9c1e3dd7c9a9b63eea118b95a540
 2019-09-20 15:34:44 +01:00
David Banks
a25a008ffc Updated lx9_dave/icez80 for active level shifter design 
Change-Id: I546e1afc0943443f444ae7f55783bac7e3379453
 2019-09-20 15:34:34 +01:00
David Banks
864bcf68df Kicad z80: added clock filtering 
Change-Id: Iffb927aec6c569c380b294d3bcf015d7ca117871
 2019-09-20 12:42:26 +01:00
David Banks
18556aa2f6 Kicad 6502: added clock filtering 
Change-Id: Ie6bed6f3463082afe51a1fb8c050a8b091c48733
 2019-09-20 12:42:18 +01:00
David Banks
9c6960cc04 ICE-6809: Added glitch filtering to E 
Change-Id: Ide53c1776bc1eafc5fd746415a83a1f34f32b3a0
 2019-09-17 17:36:11 +01:00
David Banks
d86d51e020 ICE-6809: Adjusted the timings slightly 
Change-Id: I56ef5d22df2a329bba2853bcc7d39571492edb01
 2019-09-17 16:17:36 +01:00
David Banks
b7d6ca23b3 Revert accidental change to MC6809ECpuMon 
Change-Id: I7c5627b8a056bc1a784af1d8ed4cdc61862e7aa2
 2019-09-17 10:31:12 +01:00
David Banks
805e8deca1 Kicad: 6502 - improve 5V feed 
Change-Id: Ica39a67ed9f85275c6b1dc0a90cf37d0e31e3e30
 2019-09-15 22:12:26 +01:00
David Banks
e01e5dc04b Kicad: z80 - silk screen 
Change-Id: Ic8d5d61c4317fe6d5aab339d12e606a732d2d521
 2019-09-15 21:55:17 +01:00
David Banks
9271f09183 Kicad: 6502 - updated references 
Change-Id: I45bc5e4fd75b5cd01ca32841c63654ae4ecd3aa0
 2019-09-15 21:53:40 +01:00
David Banks
bfc63310d1 Added cache.lib to .gitignore 
Change-Id: Ib26cd344c22a5ebca30d61e0b7d87c4af35061ef
 2019-09-15 21:37:50 +01:00
David Banks
33c166ac1c Kicad: Added Z80 adapter 
Change-Id: I18a319dd64b15621c386cd75942a09155ef6ca45
 2019-09-15 21:32:46 +01:00
David Banks
5b275de71f Kicad v2: added board ID inputs 
Change-Id: Icd6a9a87a3867341f807e1a5e4e62fdbedf48ec2
 2019-09-15 13:32:35 +01:00
David Banks
baee10c8b3 Kicad v2: added build for manufacturing files 
Change-Id: I4a3f04d7ee044a9d6b395d2303a9b2331e0d8fa6
 2019-09-13 17:10:34 +01:00
David Banks
2ea31b9ad9 Kicad v2: pullups now 22K 
Change-Id: Ifc62323672c629df6b52f226b6476b2ad5518f38
 2019-09-13 16:37:18 +01:00
David Banks
ade0278509 Kicad v2: tidy silk screen 
Change-Id: If12620a298bd5fbff141099f2c71169e6e205514
 2019-09-13 16:27:09 +01:00
David Banks
c176820200 Kicad v2: rename links 
Change-Id: I2fc630457c3b052049f75c04c1aff412362bf5d8
 2019-09-13 15:40:31 +01:00
David Banks
03347ad73c Kicad v2: tidy silk screen 
Change-Id: Ibfc531d09abf424fe4ee19d3ce5bf832ba04c9d0
 2019-09-13 15:37:36 +01:00
David Banks
2344540958 Kicad v2: Made U7-9 optional 
Change-Id: I12321e6fa8e13fafd418168cac815ec912868499
 2019-09-13 14:12:59 +01:00
David Banks
753b10e4cf Kicad v2: more tidying; add logo 
Change-Id: I0f30f7ad6e5b9fd4cd53931bdb14ebcec43bfbde
 2019-09-13 12:28:39 +01:00
David Banks
1c7d4a67d7 Kicad v2: tidy up silk screen 
Change-Id: I896fd28673c0eb53f6806e9b0a759d7c3031513a
 2019-09-13 11:39:05 +01:00
David Banks
1a69b146a5 Kicad v2: move links to bottom side 
Change-Id: I33b51bece46e5740e79fb7a987f4b0b4afac2db6
 2019-09-11 22:44:58 +01:00
David Banks
4b88d2aedd Kicad v2: complete routing 
Change-Id: Iae7b92ccb95a640158a3a9c1239e2491624e5da2
 2019-09-11 18:19:02 +01:00
David Banks
3691beed9f Kicad v2: associate 3D shapes 
Change-Id: Ib7420c2c4d4255bf3a8f300c0ed9f4dc21d70a33
 2019-09-10 12:37:18 +01:00
David Banks
ef13b65a05 Kicad: remove old netlist 
Change-Id: I934333fc0d8f13e24efcf26b9f0b38f45037ea6b
 2019-09-10 12:23:16 +01:00
David Banks
f444a1e95c Kicad: tidy up old rescue libraries 
Change-Id: I7ebc1262f060e53b4b61088e066c484ba505e374
 2019-09-10 12:21:58 +01:00
David Banks
53dfb4de9d Kicad: v2 of 6502 board, work in progress 
Change-Id: I5d865e1926e1c646a2db54d31abfb38bb1109585
 2019-09-10 11:56:15 +01:00
David Banks
16e2bcf9dd Renamed kicad to 6502/v1 
Change-Id: I932c4bc803c41fe6a9090767733cd44da230f795
 2019-09-10 09:51:25 +01:00
David Banks
db6b20c696 Updated to kicad 5.1.4 
Change-Id: Ie4dcf4e2a2838c19be82e0fb09b6ff49b04564ac
 2019-09-10 09:49:25 +01:00
David Banks
e66b0b51c2 Z80: remove special command as it caused code overflow 
Change-Id: If3a71ea55503ac0edb8d476c05f4f909f0e3c605
 2019-08-20 09:39:49 +01:00
David Banks
efdd41a239 6502: Added special command to inhibit IRQ/NMI 
Change-Id: I6ba8a1b3b92e5852382d35eee7a59b6a9d7e63e8
 2019-06-15 17:50:29 +01:00
David Banks
e9d4e98b96 LX9 6502: Move fakeTube input to p112 (next to a GND) 
Change-Id: Ib52362ed12ddc885025f1e098f864fdb313b795d
 2018-12-21 17:45:22 +00:00
David Banks
285697d175 6502: remove 40ns skew between phi1/phi2 outputs, as this erodes address hold time time from phi1 
Change-Id: Idd2b1418a18f6bb5cf2b553b6a069c42a0e64b97
 2018-12-21 17:25:37 +00:00
David Banks
1dcf9fa247 Updated lx9_dave/ice6502 with correct .ucf file and a new top-level design 
Change-Id: Ic67e37fb876322983a44c35e9db08b1b8371aea2
 2018-11-20 17:32:02 +00:00
David Banks
a277222012 PCB: Migrated to KiCad 5.0 
Change-Id: Ib035c47ddc7768d46feebc4e1ea05c04dbd125a6
 2018-11-20 12:06:06 +00:00
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