uzix/zx-sizif-512-ext
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update errata for pcb rev.A and rev.A1

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Eugene Lozovoy
2023-09-18 12:30:39 +03:00
parent 3b9dc68921
commit f3e6ae038a
3 changed files with 5 additions and 1 deletions
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README.md
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@ -12,7 +12,7 @@ Extension board for [Sizif-512](https://github.com/UzixLS/zx-sizif-512).
### Changelog & current status
* Rev.A - first release. Please note the [errata](pcb/rev.A/ERRATA.txt).
* Rev.A1 - fixed all known issues of rev.A.
* Rev.A1 - fixed all known issues of rev.A. Please note the [errata](pcb/rev.A1/ERRATA.txt).
### Related projects
* Turbo Sound FM ([link](http://www.nedopc.com/TURBOSOUND/ts-fm.php))

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pcb/rev.A/ERRATA.txt
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@ -1,3 +1,6 @@
- MIDI_IN is connected to U4/pin13, should be U4/pin14
- Incorrect ZX BUS pinout. Following signal pairs should be swapped: NMI/MIX_R, MIX_L/RST, CLKCPU/A1
- Incorrect connection between U5/pin4, U10/pin4 and U7/pin28. Should be cutted.
UPD. 2023-09-18:
- R1 and R34 should be 10kOhm

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pcb/rev.A1/ERRATA.txt Normal file
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@ -0,0 +1 @@
- R1 and R34 should be 10kOhm