Re: Software for MS-DOS 1.25

From: smf <smf_at_null.net>
Date: Sun, 5 Nov 2017 14:11:05 +0000
Message-ID: <deeede1f-513a-271d-521d-209a06075a1c@null.net>
On 05/11/2017 13:38, smf wrote:
> On 05/11/2017 10:41, Michał Pleban wrote:
>> You don't lose the reverse video - it's set in hardware. The screen
>> output code emits RVSON and RVSOFF characters when MDA "reverse"
>> attribute is detected.
>
> I had assumed it was like c64 and you'd replaced all 256 characters, 
> but I guess I shouldn't assume.

I'm surprised you don't just directly write to the screen, rather than 
going through the screen output routines.

on xcbm2 it looks like characters $00-$7f are normal & $80-$ff reverse, 
poke them into $d000-$d7cf. It would be much quicker.



       Message was sent through the cbm-hackers mailing list
Received on 2017-11-05 15:00:03

Archive generated by hypermail 2.2.0.