Re: A86: Re: turning off the calc
[Prev][Next][Index][Thread]
Re: A86: Re: turning off the calc
would masking the on interrupt stop the down-left bug by any chance?
On Mon, 24 May 1999 17:20:02 -0500 "David Phillips" <david@acz.org>
writes:
>Bit 3 = 1: turn LCD on
> 0: turn LCD off
>Bit 1 = 1: set bit 1 LCD status (on)
> 0: clear bit 1 LCD status (off)
what does "bit 1 LCD status" mean and how is that different from using
bit 3?
>So, when you press on, that generates an interrupt (nmi I believe)
>that
>jumps to $0066. The rom sets some stuff (like on pressed), and
>returns to
>the halt. Then, clean-up is done.
hmm, that would skip the alton thingy and screw up all the registers.
(ex af,af'; exx; reti)
-josh
___________________________________________________________________
You don't need to buy Internet access to use free Internet e-mail.
Get completely free e-mail from Juno at http://www.juno.com/getjuno.html
or call Juno at (800) 654-JUNO [654-5866]
Follow-Ups: