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by nippur72
Wed Jan 13, 2021 8:13 am
Forum: Emulation and Cross Development
Topic: Vic 20 Basicode
Replies: 26
Views: 1898

Re: Vic 20 Basicode

update: I wrote a very crude WAV conversion utility in JavaScript, here's the repo on GitHub:

https://github.com/nippur72/commodore-tap-wav

I tried to load both on the VICE emulator and FPGA and they do work, apparently.
by nippur72
Wed Jan 13, 2021 4:02 am
Forum: Emulation and Cross Development
Topic: Vic 20 Basicode
Replies: 26
Views: 1898

Re: Vic 20 Basicode

I had a look at Mister source code, and it seems the WAV loading has been removed from some reason... that's a shame! I also don't see the AUDIO_IN connected to the C1530 as in the MiST version... I guess they are not aligned and the Mister is lagging. I hope that will be solved quickly. If I have t...
by nippur72
Thu Dec 31, 2020 1:56 am
Forum: Emulation and Cross Development
Topic: Vic 20 Basicode
Replies: 26
Views: 1898

Re: Vic 20 Basicode

I've read the Wikipedia article and looked and your PR, that is very interesting! The BASICODE format looks similar to the Kansas City Standard, for which I wrote a encoder/decoder program (see https://github.com/nippur72/z80ne-wav it's called "Z80NE" because it was used on the Z80NE compu...
by nippur72
Fri Dec 25, 2020 3:22 am
Forum: Emulation and Cross Development
Topic: Vic 20 Basicode
Replies: 26
Views: 1898

Re: Vic 20 Basicode

I don't know much of BASICODE, how do you create such WAV files? And more importantly, is the same WAV supposed to load on different systems? That would be very interesting. My guess is that it does use each system's ROM routines for saving and loading--if so, the actual audio recording would be not...
by nippur72
Tue Dec 22, 2020 1:31 pm
Forum: Emulation and Cross Development
Topic: Vic 20 Basicode
Replies: 26
Views: 1898

Re: Vic 20 Basicode

are you trying to load the BASICODE interpreter from the .wav file? or a basicode program that you have previously encoded in wav? Generally speaking, WAV support for the VIC20 is awful, I also experienced lot of troubles, so when I have to deal with an audio recording I plug the FPGA or the real VI...
by nippur72
Tue Dec 08, 2020 4:17 pm
Forum: Emulation and Cross Development
Topic: Vic 20 Basicode
Replies: 26
Views: 1898

Re: Vic 20 Basicode

The saving program also loaded flawlessly on the first attempt:

Here is a floppy image containing the two, LOAD and SAVE:

https://drive.google.com/file/d/1oXPJCH ... sp=sharing
by nippur72
Tue Dec 08, 2020 1:15 pm
Forum: Emulation and Cross Development
Topic: Vic 20 Basicode
Replies: 26
Views: 1898

Re: Vic 20 Basicode

this is a very clean recording. It did load on the FPGA on the very first attempt.

Here is the .D64 containing it ("vicloadbasicode", discard the rest):

https://drive.google.com/file/d/1EtMyDW ... sp=sharing
by nippur72
Tue Dec 08, 2020 4:06 am
Forum: Emulation and Cross Development
Topic: Vic 20 Basicode
Replies: 26
Views: 1898

Re: Vic 20 Basicode

if there's anything we can do, we have to do it before the WAV to TAP conversion. TAP is a 1-bit encoding where all the useful amplitude information is lost.
by nippur72
Mon Dec 07, 2020 3:00 pm
Forum: Emulation and Cross Development
Topic: Vic 20 Basicode
Replies: 26
Views: 1898

Re: Vic 20 Basicode

I tried to load it on the FPGA (where I have the sound monitor) via a car-audio cassette adapter but I did not succeed. I tried also to load the C64 versions (on the C64) but with the same result :( . I tested normal and "inverted" waveforms, but nothing seemed to work. I was only able to ...
by nippur72
Wed Nov 04, 2020 1:54 am
Forum: Programming
Topic: a Maze generator program
Replies: 25
Views: 8076

Re: a Maze generator program

I'd presume a guard (facing to the east like thus: >) would also miss out on an occasion like this: | | <-- unreachable corridor | ... --->---+------- if the maze follows the rule I described, that corridor will be visited from North to South when the guard comes back from its route. I can't prove ...
by nippur72
Tue Nov 03, 2020 11:20 am
Forum: Emulation and Cross Development
Topic: Putting a VIC program into a QR code
Replies: 19
Views: 1417

Re: Putting a VIC program into a QR code

Jeff-20 wrote: Wed Sep 23, 2020 3:30 pm I would love to implement a browser emulator to share my programs as well.
Jeff, my emulator is now able to load external .prg, see here
by nippur72
Tue Nov 03, 2020 11:16 am
Forum: Emulation and Cross Development
Topic: vic20-emu (another emulator)
Replies: 43
Views: 2995

Re: vic20-emu (another emulator)

A small update: the emulator now accepts the "?load=url" querystring parameter where "url" is any external URL that points to a VIC20 .prg file. This way you can load programs that are hosted externally. E.g.: https://nippur72.github.io/vic20-emu/?joy=1&load=http://www.zimmer...
by nippur72
Tue Nov 03, 2020 10:48 am
Forum: Programming
Topic: a Maze generator program
Replies: 25
Views: 8076

Re: a Maze generator program

reviving this very old thread.... I am still thinking about a maze generator, now for a possible III episode of Raid On Fort Knox. The maze generation has a restriction though: in ROFK the "guards" always move forward, turning left or right only when they bump into a wall (either a 90 deg ...
by nippur72
Sat Oct 24, 2020 8:10 am
Forum: International VIC
Topic: Paper Soft type-ins (comments) (ITA/ENG)
Replies: 205
Views: 127258

Re: Paper Soft type-ins (comments) (ITA/ENG)

nbla000 wrote: Sat Oct 24, 2020 2:55 am Di moderatori italiani purtroppo vedo che ci siamo solo io, orion70 e nippur72 che non sento da un po' e saluto con grande affetto.
olaaa! chi si rivede !! ciao è un piacere leggerti di nuovo, sono mancato qualche anno dal forum ma quando sono tornato non ti ho più trovato.
by nippur72
Mon Sep 28, 2020 2:52 am
Forum: Emulation and Cross Development
Topic: Putting a VIC program into a QR code
Replies: 19
Views: 1417

Re: Putting a VIC program into a QR code

another issue is that you can't call fetch() from an HTTPS domain (emulator) into a HTTP (without the "S") one like sleepingelephant.com