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This project is an open-source In-Circuit Emulator for the 6502, 65C02, Z80, 6809 and 6809E 8-bit processors. See:
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C 9.3%
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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
firmware LX9 support: massive refactor of the build system 2017-07-26 14:59:20 +01:00
kicad PCB: Cosmetic adjustment to IC positions 2017-07-25 16:17:04 +01:00
releases Rebuilt xc3s500e builds of v0.73 using seperate ip_core dir 2016-10-24 18:01:44 +01:00
src 6502: Change din sampling from Phi0_b to Phi0_a 2018-02-15 13:06:25 +00:00
target Checked in initial work on lx9_dave target (see full comment) 2018-11-20 09:42:58 +00:00
.gitignore LX9 support: massive refactor of the build system 2017-07-26 14:59:20 +01:00
Blank.xise Added build scripts for xc3s500e 2016-10-24 14:24:18 +01:00
LICENSE.txt Added license 2015-06-11 21:45:35 +01:00
README.md Updated README 2016-07-15 15:21:28 +01:00
release.sh Minor change to release.sh script 2017-07-28 15:07:12 +01:00

README.md

ICE-T65 / ICE-T80 / ICE-6809

This project is an open-source In-Circuit Emulator for the 6502, 65C02, Z80, 6809 and 6809E 8-bit processors.

For further details see the GitHub Project Wiki: https://github.com/hoglet67/AtomBusMon/wiki

If you have any questions or feedback, please join in the discussion thread at stardot.org.uk: http://stardot.org.uk/forums/viewtopic.php?f=44&t=9655