View Full Version : Ladder Game (Now, with 640x480 mode)

05-09-2008, 03:06 AM
Anybody remember Ladder from the CP/M days?· My dad let me play it on his Kaypro when I was a kid...

It's something like "Donkey Kong" but with text graphics...

Update:· Added a 640x480 version, removed test code

Note:··"ladder_vga" requires a vga monitor capable of 640x480·and a keyboard
········· "ladder1a" requires·vga monitor capable of 1280x1024 and a keyboard.

I think it's all done now.
But, I don't know for sure because I haven't made it to the end yet...
One note:· Don't hold keyboard keys down, just hit a key once for an action...

Here's a preview pic and final codes (ladder1a.zip, ladder_vga):

Post Edited (Rayman) : 5/17/2008 6:23:12 PM GMT

05-09-2008, 03:25 AM
holly CRAP!!!! I spent hours playing that game! I'd love to play it again for fun. My dad also purchased A kaypro, our first computer for around $1800.00, I think after many many hours of playing I beat the game only to find out the it just starts out again only faster. monochrome, text for graphics games those were the days!!

Nice work!

I actually have them Still my dad purchased 3 over the course of a few years! I was going to use one for a propeller project but didn't have the heart to tear into it.

"A complex design is the sign of an inferior designer." - Jamie Hyneman, Myth Buster


05-09-2008, 03:27 AM
Excellent. I was just contemplating spending the time to understand how to get the original code for this working under CP/M running on my 8085 emulator for the Prop. So I'll be looking into your code:) If something like the ladder game would work I'm sure we could have Wordstar etc running on the Prop as well.

For me, the past is not over yet.

05-09-2008, 04:11 AM
heater, I'm actually starting from unix curses c code, not the original CP/m source..

05-09-2008, 11:29 AM
Ah, THAT curses, of course. I guess the original CP/M ladder used escape sequences for VT100 terminals or such which I have yet to look into.

For me, the past is not over yet.

05-09-2008, 10:15 PM
Got it working! (I think). I've updated the original post with the latest file...

It's still pretty fun (and challenging) after all these years...

05-10-2008, 01:48 AM
That game makes me remember the old TK-85 (discrete version of a CZ1500, ZX-81) Donkey kong. It was also text with low resolution "graphics" at 64x48. The game was pretty cool for my age and that machine http://forums.parallax.com/images/smilies/smile.gif. The floor had some arrows that dragged the player in a direction and made your life more difficult. The fireballs were asterisks and they even followed you!. what memories !!

05-12-2008, 03:26 AM
I think it's complete now... I posted a new version to the first post (ladder1a.zip).

05-17-2008, 06:54 PM
Just did a quick hack of the VGA_HIRES_TEXT driver to get it to do 80 columns x 30 rows in 640x480 mode. This works pretty good for Ladder...
I added this version to the original post and removed a test versior

05-23-2008, 07:33 AM
Nice work Rayman, I like the fact the instructions / high score are in the game!!