Jump to content
Sign in to follow this  
MrDave

Coco3 hardware scrolling from Basic !

Recommended Posts

This program is 100% basic code no ml subroutines.. the read/poke are for the palette colors

 

  • Like 1

Share this post


Link to post
Share on other sites

Wow!  That looks great! 

15 hours ago, MrDave said:

This program is 100% basic code no ml subroutines.. the read/poke are for the palette colors

 

Where is the information on how to do this or can you share?

Share this post


Link to post
Share on other sites

Is the image from something like CoCo Max 3? I see you LOADM’ing a bunch of files.

 

I remember pulling a static image from CoCo Max 3 into BASIC after reading how to do it from somewhere BITD.

Share this post


Link to post
Share on other sites

Yes i converted a bmp image into 8k chunks and load them in the ram. With loadm "plata...platb etc

Then from basic i set variable vv to the start of my image in ram and poked that to the video chip,.. then i scroll down a bunch of times by adding 32 to it.. then i use to joystic to adjust the pos.. i have a dsk image if you want

Share this post


Link to post
Share on other sites

@MrDave Can you post the DSK image to the CoCo Archive - that way, everyone can enjoy it?

 

https://colorcomputerarchive.com/

 

-- AndrewA

Share this post


Link to post
Share on other sites
On 7/16/2021 at 7:19 PM, MrDave said:

This program is 100% basic code no ml subroutines.. the read/poke are for the palette colors

 

Why though? Considering there are compilers and assemblers for the 6809, why even bother with BASIC anymore???

Share this post


Link to post
Share on other sites

Some people returning to these retro machines like to see what can be done with the OK prompt.

 

Share this post


Link to post
Share on other sites

I never knew of these tricks when i had a coco3 back in the day.,  i will let you guys know when i have uploaded the code to the archive :)

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
Sign in to follow this  

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...