A83: Re: help to understand
[Prev][Next][Index][Thread]
A83: Re: help to understand
Your meesge has been happily deleted from the face of my computer, due to
the fact you won't help yourself.
-----Original Message-----
From: Phelan Wolf <gwatford@worldnet.att.net>
To: assembly-83@lists.ticalc.org <assembly-83@lists.ticalc.org>
Date: Thursday, 2 April 1998 9:59
Subject: A83: help to understand
>
>Allright, normally I just sit reading your letters and do nothing, but I
>have decided to get off my ass and start programing in assembly. I have
>many-a questions, some you have already answered but I delete e-mail
>often.
>
>For starters what do these do:
>
>call _puts ;seems to be frequently used
>call _newline ;does this make a new blank line?
>call _LCD_Busy ;does this add that busy signal up top?
>call _runIndicOff ;no clue?
>call _runIndicOn ;turn whatever it does back on I suppose
>call lcd_busy ;is this the same as the one I listed above?
>out (LCDINSTPORT),a ;lost on this one
>jp ; is this a jump to whatever variable is listed to the right of it
>call _putc ;??
>call _pdspgrph ;what does this do to the graph, and what is the command
>to clear the graph
>call _saveshadow ;probably has to do with the Last Entry on the Home
>screen
>call _rstrshadow ;does this reset the saveshadow?
>call _VPUTS ;??
>
>This is a part of a program I just lost it on:
>
>set write_on_graph,(iy+sgrflags) ;I assume it deals with placing
>something on the graph
>1d h1,0 ;does this set h1 as 0
>1d (pencol),h1 ;does this set pencol as h1 or 0
>Ld HL, THIS_IS_COOL ;I assume this prints THIS_IS_COOL at pencol
>call _VPUTS ;this is a funny command used alot in the source I read
>res write_on_graph,(iy+sgrflags) ;Does this disable writing on the
>graph?
>
>Is this how you draw a line:
>
>set write_on_graph(iy+sgrflags)
>1d bc,57 ;store 57 as bc
>1d de,94 ;store 94 as de
>1d h1,bc ;store bc as h1
>1d h,de ;store de as h
>call _iline
>
>Phelan 'Amen' Wolf
>
>he's comming out of the closet and into the real world of asm
>