30.12.2013 Views

Stereo Scan 440 - DCU

Stereo Scan 440 - DCU

Stereo Scan 440 - DCU

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

" c., Appeudb C Expansion via the PC! A T BICkpIanc ~3<br />

~<br />

~<br />

12 bits of VO address are decoded by the PC. whereas the 80 x 86 support.s<br />

the use of 16 bit VO addresses. This means that the PC will respond to<br />

addresses above the 1{)()() boundary.<br />

DAtA Channels<br />

There are 8 DMA channels on a PC. two of which are used by the PC. These are<br />

as foUows:-<br />

Channel<br />

0<br />

2<br />

3<br />

4<br />

I De~-<br />

I floppy ~ Cootroll« - =<br />

- ~<br />

Cascade for DMA ContrT>11~r 1<br />

L<br />

6<br />

7<br />

The free channels 0, I and 3 are available for 8 bit DMA transfers, channels 5,6<br />

and 7 are available for 16 bit transfers.<br />

S~reoscan <strong>440</strong> Operator Manual

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!