CACHE SRAM versions

[Black_Cat]

1) Where I can find informations about CACHE SRAM ?

2) Is supported only 16 / 32kB versions ?

3) CACHE SRAM is used as ROM replacement ?

4) Memory 32kB-???kB is paged as original rom(via bit D4 on port 7FFD) ?

5) Write protect feature is supported ?

6) NMI button call TR-DOS rom or CACHE sram ?

7) is CACHE SRAM is active then RESET button always ronnect ZX rom ?

8) Is CACHE SRAM supported ? What version ?

VELESOFT

http://www.zx.pk.ru/showpost.php?p=160558&postcount=11
For the clones ZX Spectrum ex USSR is not necessary to have an SRAM, so there is no single standard. Just for the clones ex USSR Cashe SRAM is rarely used, it is easier to increase the amount of RAM.
Tell me why you need it?

[Advertiser]

[VELESOFT]

[url]Tell me why you need it?

I can modify system DEMFIR for russian ZX clones (if will enable in adress space 0-16383 use ram memory paging - ideal with write protect feature)


VELESOFT