Musical Keyboard PRG for your CBM/PET
RhinoDevel’s Musical Keyboard.
My musical keyboard for your Commodore 8-bit CBM/PET machine is out now!
Play, record (!), save and load melodies with your CBM 3032, 4016, 8032, etc.!
Read more and find the download of v1.0 at Github: https://github.com/RhinoDevel/keyboard/blob/master/README.md
Enjoy and stay creative!
Marc @ RhinoDevel
CBM Tape Pi v1.6.0 with direct SD card access
CBM Tape Pi v1.6.0 finally supports direct Raspberry Pi SD card access (the additional serial connection to a PC is no longer necessary)!
Watch the video (demoing with a Commodore CBM 3032)!
Please use the more recent version CBM Tape Pi v1.6.1!
Read all about it at GitHub project page.
CBM Tape Pi – Datassette emulator
Send your PRG files via serial interface connected to a Raspberry Pi (emulating a datassette/tape drive) to your Commodore machine with my solution called CBM Tape Pi!
More details at the CBM Tape Pi GitHub page:
Release 1.0 for Raspberry Pi 1 and Raspberry Pi 2
Have fun with your retro hardware!
Marc @ RhinoDevel
ImmoAnnuRechner
Der ImmoAnnuRechner in Aktion.
Um die tatsächlichen Kosten einer Immobilienfinanzierung per Annuitätendarlehen berechnen zu können, habe ich einen extrem einfach gehaltenen Rechner implementiert, den Ihr per Browser aufrufen könnt:
Der Rechner funktioniert folgendermaßen:
Veränderbare Eingaben sind:
- Kaufpreis.
- Diverse Nebenkosten (%).
- Eigenkapital.
=> Damit wird das benötigte Fremdkapital berechnet.
- Zinssatz (%).
- Anfangstilgung (%).
=> Dadurch werden dann die restlichen Ergebnisse berechnet, u.a.:
- Monatliche Rate.
- Laufzeit.
- Gesamtzinsen.
“Klickt” man sich aus einem Eingabefeld “heraus”, werden alle Werte automatisch erneut berechnet (also aktualisiert).
Die aktuellste Beschreibung und den kompletten Source Code findet Ihr unter:
Viel Erfolg beim Immobilienkauf
Marc @ RhinoDevel
Commodore PET/CBM 4032-32N
Enjoy these images of my Commodore PET/CBM 4032-32N mainboard! It is a 8032090 type of board, you can find the schematics and further documentation here.
JavaScript: Convert number to binary (string)
Create a string holding the binary representation of a number (that is initially converted to a positive integer) with JavaScript:
var decToBinStr = function(n)
{
var s, i;
if(n===0.0)
{
return String(0);
}
i = ~~Math.abs(n); // Positive integer wanted.
s = '';
do
{
s = i%2 + s;
i = ~~(i/2); // Integer division.
}while(i>0);
return s;
};
The function above creates the binary representation as one would do it with pen and paper.
I implemented it this way to show how you can do it in any programming language.
But if you are interested in a “better” way to do this with JavaScript:
You may also use the >>> (zero-fill right shift) operator to achieve this (or something almost similar..) with less code. See Mozilla and stackoverflow.com.
