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Forums > C64 Coding > keep top 2 rows of screen from vertical scrolling
2021-07-19 03:09
TheWarCriminal
Account closed

Registered: May 2011
Posts: 30
keep top 2 rows of screen from vertical scrolling

I lost my code from years ago that would keep the top 2 rows of the character screen (1024+80) from vertical scrolling with no flickering. I used it for the BBS I was creating back then. With recent devs in CBASE not performing how I would like it too I have started back recoding that BBS but I need 2 very important things. First off is a no vertical scroll on the top 2 rows. I know CBASE has one but it flickers and is compiled. Would like one in ML or someone point me in a starting direction. The 2nd one is a date ML routine. I know how to check the time and convert it into a readable format but the timer does not hold a date so it keeps resetting at 24hr. Since I am coding this BBS for WinVice is there a way to get the info from the emulated RTC?

I know this sounds like I have no clue what I am doing but when you have been away from c64 coding for 3 decades you loose the knowledge. Just getting reacquainted with BASIC V2 is a hazzle when you are so used to VB.NET behind code. One oh the things that constantly get me is the string setup: BASIC V2 is string$ where as VB.NET is $string. Which ever company decided to screw around with the context should have left it alone.

Any help would be appreciated in this. (I have searched the forums here, Google and Internet Archive c64 Books)
 
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2021-07-21 16:00
Silver Dream !

Registered: Nov 2005
Posts: 107
Quoting Groepaz
Oh yeah, border sprites with RS232 NMI going on \o/
Is that a problem or what? :-P
2021-07-23 12:01
Krill

Registered: Apr 2002
Posts: 2804
Quoting Silver Dream !
Quoting Groepaz
Oh yeah, border sprites with RS232 NMI going on \o/
Is that a problem or what? :-P
Maybe just a different kind of flicker, maybe no problem at all (opening the vertical borders has a large margin of tolerance).

Additional DMA itself (caused by the sprites) on top of badline DMA shouldn't be a problem at all, should it? :)
2021-07-23 12:38
chatGPZ

Registered: Dec 2001
Posts: 11088
Oh when Krill mentions borders i was thinking of sideborder, of course. Vertical is no problem, obviously :=)
2021-07-23 18:33
Count Zero

Registered: Jan 2003
Posts: 1809
OP should clarify what he actually wants to achieve or if one of the excessive answers already resolves his problem.

THEN we go into creation a sideborder display for a session trace, the IP and a traceroute of the currently logged on user.
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