Search found 1040 matches

by MADrigal
Fri Apr 14, 2023 10:56 am
Forum: Hardware
Topic: Cassette to USB
Replies: 2
Views: 672

Re: Cassette to USB

I have a much cheaper walkman-style one that connects directly to the PC USB port. Comes with or without record button. Had it for years and used it to dump many CreatiVision cassettes.
by MADrigal
Thu Apr 06, 2023 8:24 pm
Forum: Software
Topic: Parallax Scrolling
Replies: 1
Views: 631

Re: Parallax Scrolling

Really impressive!!
by MADrigal
Sat Apr 01, 2023 12:50 pm
Forum: Software
Topic: Cartridge ROM mapping
Replies: 77
Views: 10852

Re: Cartridge ROM mapping

Well you can run a Z80 (colecovision converter) so I assume you can run any cpu
by MADrigal
Thu Mar 30, 2023 10:35 am
Forum: Software
Topic: Cartridge ROM mapping
Replies: 77
Views: 10852

Re: Cartridge ROM mapping

Gorgeous stuff!
by MADrigal
Tue Mar 28, 2023 8:20 pm
Forum: Software
Topic: Cartridge ROM mapping
Replies: 77
Views: 10852

Re: Cartridge ROM mapping

@username@ wrote:
Tue Mar 28, 2023 11:30 am
I took the executive decision to fix the byte at $7223 for BASIC - saves writing and having a panic attack :lol:
Can you please share the patched BASIC rom here?
by MADrigal
Tue Mar 28, 2023 8:08 pm
Forum: Software
Topic: Cartridge ROM mapping
Replies: 77
Views: 10852

Re: Cartridge ROM mapping

Excellent Tom this clarifies everything
It would be good to wrap all the info in a single document or article to share from the website, to give it more visibility.
by MADrigal
Tue Mar 28, 2023 6:39 pm
Forum: Software
Topic: Cartridge ROM mapping
Replies: 77
Views: 10852

Re: Cartridge ROM mapping

I believe as long as there's something the 6502 accesses and executes at startup, anything would do. Bios, or a game or a program doesn't matter. What is important is to know whether the console has logic suitable/sufficient to disable the original bios so it can be bypassed. thanks for confirming t...
by MADrigal
Tue Mar 28, 2023 6:25 pm
Forum: Software
Topic: Cartridge ROM mapping
Replies: 77
Views: 10852

Re: Cartridge ROM mapping

Thanks Tom. I didn't dare mentioning the Meg SD cart cause I wasn't too sure if it used a modified bios at $f800 (bypassing the existing bios entirely) or in the usual 32k rom space. Also cv mark 1 and 2 have different address lines so it's important to know if and how you can use the upper 16k on b...
by MADrigal
Tue Mar 28, 2023 6:00 pm
Forum: Software
Topic: Cartridge ROM mapping
Replies: 77
Views: 10852

Re: Cartridge ROM mapping

2 eprom games take up the whole 32k space while single eprom games occupy the lower 16 space (as far as what the hardware 'sees') The key with commercial (VTech) CV games is not how many EPROMs, but their size and how they are soldered in the PCB. That determines where each EPROM is mapped. 6K game...
by MADrigal
Tue Mar 28, 2023 12:30 pm
Forum: Software
Topic: Cartridge ROM mapping
Replies: 77
Views: 10852

Re: Cartridge ROM mapping

Thanks pal. I should publish the fixed basic on the cvemu website as a download rom