1. I recommend you to use emulator 3 channel version instead of AY-3-8912, just as is, place it on PCB or breadboard and connect to ZX as AY-3-8912 according to pinout.
2. It’ll be better if you describe your model, because connection of memory expander is different on different models. If your model use ULA it is probably difficult to increase memory, because all logics is inside the ULA.
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ΠΡΠ»ΠΈ ΠΊΠΎΠΌΡ-ΡΠΎ ΠΈΠ· ΠΠ‘Π Π½ΡΠΆΠ½Π° ΠΏΠ»Π°ΡΠ°, Π³ΠΎΡΠΎΠ² ΠΏΠΎΠ΄Π΅Π»ΠΈΡΡΡΡ Π·Π° ΡΠΈΠΌΠ²ΠΎΠ»ΠΈΡΠ΅ΡΠΊΡΡ ΠΏΠ»Π°ΡΡ Π² 100Ρ π
Dear!
Need two things:
1. To replace AY-3-8912 in my Spectrum Sinclair 128K your solution
2. To make my Sinclair 48 k with more memory
Any Help?
1. I recommend you to use emulator 3 channel version instead of AY-3-8912, just as is, place it on PCB or breadboard and connect to ZX as AY-3-8912 according to pinout.
2. It’ll be better if you describe your model, because connection of memory expander is different on different models. If your model use ULA it is probably difficult to increase memory, because all logics is inside the ULA.
ΠΠΎΠΈ ΠΏΡΠΈΠ²Π΅ΡΡΡΠ²ΠΈΡ! ΠΡΠ΅Ρ Ρ ΠΠΎΠ²ΡΠΌ Π³ΠΎΠ΄ΠΎΠΌ !!! ΠΠΎΡΡΠΈΠΆΠ΅Π½ΠΈΡ Π²ΡΡΠΎΠΊΠΈΡ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠΎΠ² ΠΆΠΈΠ·Π½Π΅Π΄Π΅ΡΡΠ΅Π»ΡΠ½ΠΎΡΡΠΈ ΠΈ ΡΠ²ΠΎΡΡΠ΅ΡΠΊΠΈΡ ΡΡΠΏΠ΅Ρ ΠΎΠ² !
Π₯ΠΎΡΡ ΠΏΠΎΠ΄Π΅Π»ΠΈΡΡΡΡ) Π‘ΠΎΠ±ΡΠ°Π» Π²ΠΎΡ ΡΠ°ΠΊΠΎΠΉ AVR ZX Spectrum Π² ΠΊΠ»Π°Π²ΠΈΠ°ΡΡΡΠ΅)
https://www.youtube.com/watch?v=ZmJOj_NBkmw