Отличие AY-8912A от AY8912 и YM2149 от YM2149F

[Andrey_Korabelev]

Вот только все EPM3032 прошиты с отключением Житага, поэтому к сожалению в мусорку...

А если +11 на OE1(вывод 44) подать, вдруг заведется, один фиг не жалко, заодно проверим?

Does the OE1 pin drive High when the MAX 3000A device is being programmed?

Description
No, the OE1 pin does not drive high when the MAX® 3000A device is being programmed. The OE1 pin is the VHJ pin during programming mode which must be set to 11 volts to override the "disable JTAG pins" bit on the device to start the In-System Programming (ISP) operation. If the "disable JTAG pins" bit is not set in the programming files (POF) nor in the device, there is no need to bring VHJ to 11 volts.

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I suppose, operation is similar to protection write enable with flash memory (e.g. AM29F0xx). You have to apply high voltage during the intended programming action. The transition to high voltage and vice versa should have a limited rise time, e.g. > 500 ns for the said flash. Extending it to several µs by a RC filter should be save anyway.

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