Re: Article PC-card

From: Nate Dannenberg (natedac_at_kscable.com)
Date: 2001-04-05 02:24:11

> > gbhn> Questions:
> > gbhn> - I studied the Prog. Ref. Guide but couldn't find this feature so I may
> > gbhn> asume that it is not on the 6526. Can anybody confirm, please?
> >
> > You mean 16 bit transfer?

Stepping in a little late in the thread here; page 429 of the C64
programmer's reference guide.

> Note: if you're going to use the 65816, it might write the low byte first
> when doing 16bit stores.  If so, simply latch the lower side, and trigger on
> high. easy pickin's. =)

The 65816 reads/writes the low byte of the register (A, X, or Y) from/to
the address specified in the instruction, then the high byte from/to the
next higher address.

-- 
 /~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~___~~~~~\
|  natedac@kscable.com              //Z@|___  |
|  http://home.kscable.com/natedac |'(__ [_<  |
 \_C64/C128_-_What's_*YOUR*_hobby?__\___|____/

-
This message was sent through the cbm-hackers mailing list.
To unsubscribe: echo unsubscribe | mail cbm-hackers-request@dot.tml.hut.fi.

Archive generated by hypermail 2.1.1.