[Coco] 6809 example

[Roger Taylor]

At 04:50 PM 1/18/2004 -0500, you wrote:
>Theodore (Alex) Evans wrote:
>
>><snip>
>>With the shell sort you start with your initial screen, see some more or 
>>less random looking swaps, then have a sorted screen.  With the bubble 
>>sort you see the elements flow into position before you end up with the 
>>sorted screen.
>>When Barden presents this he is busy introducing you to the edit and 
>>assemble features of EDTASM+, it is in chapter 1 and the first opcode 
>>isn't presented until chapter 3.
>
>This code look pretty good. If you are a beginner, look out world!
>
>One thing missing is a point of origin. As written, the code will start at 
>$0000 and if loaded on a Coco without an offset will crash the system. I 
>suggest something like
>         ORG     $7000
>>* Hello, World
>>* Clear screen
>>     ldx #$0400
>>     lda #$20

I'm willing to bet that POKEing #$20 to the VDG screen will show a 
black/dark block character instead of a green SPACE.  True?


----------
Roger Taylor