Search found 1332 matches

by robcfg
Wed Apr 21, 2021 6:12 pm
Forum: Dragon Hardware
Topic: Diagnosing a faulty CoCo2
Replies: 1
Views: 28

Diagnosing a faulty CoCo2

Hello everyone! I'm trying to diagnose a 16Kb Korean made CoCo2 I got from a friend long ago, and as him before me, I'm quite stuck :lol: So, here's the patient: CoCo2_01.jpg And here's the symptom: CoCo2_02.jpg The screen is grey because it's a NTSC machine on a PAL tv. What do I know? 1) The machi...
by robcfg
Mon Mar 22, 2021 11:06 pm
Forum: Hints and Tips
Topic: Help running Basic programs from Rom
Replies: 3
Views: 468

Re: Help running Basic programs from Rom

Ok, analysing the code in the rom I mentioned, it turns out that the first line does the following: 1 POKE28,239:POKE32760,123:GP=0:RET=4:POKE32736,4:POKE32739,0:FER=2:POKE&H120,20:DEFUSR0=32720:CLEAR600,32720:P=PEEK(32761):IFP=1THENGOTO992:ELSEGOTO1450 So I guess I can have that on the asm loader l...
by robcfg
Mon Mar 22, 2021 12:14 am
Forum: Hints and Tips
Topic: Help running Basic programs from Rom
Replies: 3
Views: 468

Re: Help running Basic programs from Rom

I've tried following John's tutorial but makes no difference whatsoever.

Also if it were the case, why is it that the driving test rom works with that minimal loader?
by robcfg
Sun Mar 21, 2021 7:14 pm
Forum: Hints and Tips
Topic: Help running Basic programs from Rom
Replies: 3
Views: 468

Help running Basic programs from Rom

Hi folks! I'm trying to get a Basic program running from cartridge because, why not? So, I'm trying to replicate what the rom of the spanish driving test does, which is to copy the program to 0x1E00 and then jump to the basic RUN command at 0x85A5. The loader code is this: CLRA LDA #$5B STA >$001B S...
by robcfg
Fri Mar 05, 2021 8:52 pm
Forum: For Sale
Topic: FS: Various Dragon Cassettes (untested)
Replies: 3
Views: 571

Re: FS: Various Dragon Cassettes (untested)

Thanks a lot!
by robcfg
Fri Mar 05, 2021 5:07 pm
Forum: For Sale
Topic: FS: Various Dragon Cassettes (untested)
Replies: 3
Views: 571

Re: FS: Various Dragon Cassettes (untested)

I'm interested in Salamander's Data Retrieval System, if you can pack it along the boards and send it to Sweden.

Cheers,
Rob
by robcfg
Fri Mar 05, 2021 12:03 pm
Forum: For Sale
Topic: FS: 2x Dragon 32 Main Boards (untested)
Replies: 2
Views: 297

Re: FS: 2x Dragon 32 Main Boards (untested)

Hi,

I’m interested in the boards, how much would they be including registered shipping to Sweden?

Cheers,
Rob
by robcfg
Sun Feb 21, 2021 11:27 am
Forum: Dragon Hardware
Topic: Experimental Blitter
Replies: 8
Views: 1115

Re: Experimental Blitter

Does it fit i to a cpld?

Just looking at low price and low surface area to fit in a regular cartridge :mrgreen:
by robcfg
Sat Feb 20, 2021 9:51 am
Forum: Dragon Hardware
Topic: Experimental Blitter
Replies: 8
Views: 1115

Re: Experimental Blitter

This looks great!

How does it work? Does the cartridge has its own memory and the the result is blitted back to screen memory, or is it faster accesses to memory?

Excellent work!
by robcfg
Fri Dec 04, 2020 10:22 pm
Forum: Software Requests
Topic: Text Adventure Creator Program - was there one?
Replies: 33
Views: 7102

Re: Text Adventure Creator Program - was there one?

I tried to use Lantern but it doesn’t work on a 64 bit machine nor in XP under VirtualBox.

On top of that it’s closed source so there’s no way to help.

That’s it for me.