Как победил работы ПЗУ Wnibond W27C512-45Z? у меня не запускается на этом ПЗУ если можно поподробнее
Вид для печати
Прочитал всю ветку так и запутался где истина
Thread necromancy!
Now that the gerbers have been released, I'm in the process of updating them. Currently I'm adding a silkscreen layer and cleaning up the soldermask.
Are there any updates you'd like to see? I'm considering to add ATX-20 and Molex connectors as alternative options for the power supply, as well as adding a Tape-In circuit and LEDs for EFF7 Bits 2 (1MB RAM available) and Bit 4 (Turbo)
https://i.imgur.com/YOHQ6vb.jpeg
Current progress (Silkscreen completed, Molex PWR added, Tape-In added):
https://i.imgur.com/2eW5xM5.png
Todo: EFF7 LEDs, connect wires
Final proposal:
https://i.imgur.com/QKfiuZZ.png
https://i.imgur.com/d56Uw4i.png
Thought about adding the pal444 circuit by ddp to the breadboard part, but since it was never really used, would work better as a daughterboard for the CPU socket and I don't like changing major parts of the layout with SprintLayout I decided against it. If you're missing any smaller changes, let me know, otherwise I will order prototypes on wednesday and release the updated gerber files once they've been confirmed.
Думал добавить схему pal444 от ddp в макетную плату, но поскольку она никогда не использовалась, лучше бы работала как дочерняя плата для процессорного гнезда, и мне не нравится менять основные части макета с помощью SprintLayout, я решил отказаться от этого. Если вы не заметили каких-то мелких изменений, дайте мне знать, в противном случае я закажу прототипы в среду и выложу обновленные гербер-файлы, как только они будут подтверждены.
EDIT: I've found a Tape-Out circuit, which could also add another LED for EFF7-D3 (NoROM) ... doesn't make too much sense to me to add to be honest, opinions on that?
EDIT2: Small additional board I've built which shows the CPU frequency (needs 4 wires to be connected)
https://i.imgur.com/6L4Xf5L.jpeg
EDIT3: Prototypes ordered
EDIT4: Prototype boards have arrived and parts have been ordered. I'll likely be able to verify the design within the next 2-3 weeks.
https://i.imgur.com/76vDjB8.png
EDIT 5: Prototyping successful :) Gerbers soon.
Gerbers here:
https://github.com/zxshock/Pentagon_1024SL_2.2_mod