No, but DMA chip enable hardware scroll, fast transfer of data block
between memory or I/O ports, search data...
DATA-GEAR versionn for SAM COUPE also contain RESET debouncer, NMI
debouncer, possibility connect new button with ZX reset (no reset SAM,
but only reset Z80 CPU), jumper for possibility disable MIDI ports
(better compatibility with zx games).
VELESOFT
Dne 9. 8. 2015 v 10:25 Simone Voltolini napsal(a):
J
And what it means?
Have a REAL SPECCY on Sam Coupe?
*Da:*owner-sam-us...@nvg.ntnu.no [mailto:owner-sam-us...@nvg.ntnu.no]
*Per conto di *VELESOFT
*Inviato:* domenica 9 agosto 2015 00:46
*A:* SAM USERS <sam-users@nvg.ntnu.no>
*Oggetto:* DMA INTERFACE for SAM COUPE
Here is my version of DATA-GEAR (Z80 DMA interface for SAM COUPE).
It's internal version for connection instead original Z80CPU (need
replace CPU with socket).
http://velesoft.speccy.cz/other/dma%203Trd+3Twr-long.png
VIDEO (sorry, bad quality and low FPS). Almost fullscreen scroll 25
fps on real sam coupe.
http://velesoft.speccy.cz/other/DMA_SAM_001.MPG
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