Another Spec?

Hello Grand Come on, friends, they looked carefully and said what kind of computer it was (option/version)? Leading information: a clean board was purchased in Perm about 15 years ago. Soldered already in Irkutsk. I have diagrams, I'll attach them if needed. You can solder as the authors intended, or a 48k version, with one line of RAM (with this does not solder in the second line of RAM and about three other small devices) or - full 128k option (everything is soldered in). Characterized by 320 lines per frame and “transparent” (without WAITs, etc.) access to all pages of RAM. Now, after my simple modification, it already has 512k of memory (via additional. 7FFDh digits). Maybe the Permians will recognize it if it was traded with them? File: zx.jpg http://zx.pk.ru/attachment.php?attachmentid=3235