esp8266-C64: A C++ repository from NardJ

ESP8266-C64

This is a C64 Emulator running on an esp8266 using a webbrowser as a display. For more info see http://www.esp8266.com/viewtopic.php?f=8&t=4704&p=28932#p28932. The code was based upon http://forum.arduino.cc/index.php?topic=193216.msg1793065#msg1793065

Android phones are incompatible due missing keyboard

Code is now prepared for

Arduino IDE 1.8.10
esp8266 board tools version 2.4.2 (important!)
LwIP 1.4 Higher bandwidth
CPU frequency 160MHz

Installation

Extract the files in the zip
Start Arduino editor and open the ino file
Upload the ino file to the esp8266
This sketch will create a free WiFi-AP named Commodore 64
Tap on it
Enjoy...

Have fun

You should now see the startup screen of de C64!

BASIC example

  10 FOR I = 1 TO 10
  20 PRINT "HELLO WORLD"
  30 NEXT I
  RUN

Using pokes you can change the background color, position of text and write character to screen:

  POKE 53280,2
  POKE 53281,5

Of course you can also enter simple programs like:

  10 PRINT "C64 lives!"
  20 GOTO 10
  RUN

Tetris BASIC code example

But such a pity, clipboard does not work...

1 a$="efijefijefijefijbfjnhijkbfjnhijkijfgaefjijfgaefjefjkiefbefjkiefbbfjidefj" 
2 a$=a$+"abeieijkaeijijkgabfjiefgehijebfj@abe@dhe":o=207:dime(o):forx=0to111 
3 print,"   {CBM-M}","    {CBM-G}":p=asc(mid$(a$,x+1)):e(x)=(pand3)+(pand12)*10:next:m=2024 
4 print,"    {CBM-T}{CBM-T}{CBM-T}{CBM-T}{CBM-T}{CBM-T}{CBM-T}{CBM-T}{CBM-T}{CBM-T}":gosub6:goto7 
5 pokei+e(r),c:pokei+e(r+1),c:pokei+e(r+2),c:pokei+e(r+3),c:c=160:r$="d":return 
6 i=1152:r=h:c=32:gosub5:j=int(rnd(0)*7)*16:r=j:gosub5:r=h:h=j:i=i+9:return 
7 gosub6:w=i:t=i:g=r:k=240:l=1278 
8 gosub15:c=32:gosub5:r=-r*b-g*notb:g=r 
9 i=w:w=i+40:gosub5:gosub15:ifbthen12 
10 getk$:g=randkor((r-4*(k$="s"))and15) 
11 t=w:w=w+(k$=l$)-(k$=r$):l=l+40:goto8 
12 c=o:gosub5:m=m-(l<m)*(l-m):fory=0to3:q=1:forx=0to9:q=q*(peek(l+x)=o):next 
13 fors=ltol+(m-160-l)*qstep-1:pokes+11,peek(s-29):next:y=y-q:m=m+q*40:z=z+q 
14 l=l+40*not-q:next:print"{home}";z:goto7 
15 b=0:forx=0to3:b=bor1andpeek(w+e(g+x)):next:b=b>0:w=-t*b-w*notb:l$="a":return

Note that the {CBM-x} represents the graphic on that particular key (press the c= key and the letter to produce it)

For more examples follow links at: https://github.com/matgoebl/esp8266-ntsc-c64-emulator/tree/master/prg https://gkanold.wixsite.com/homeputerium/kopie-von-games-list-2019-2

Remarks regarding speed:

The emulation speed within the esp8266 is higher than the update speed of the browser. The maximum speed of the browser implementation is 5 frames per second, possibly due to the use of the XMLHTTP protocol! Any ideas/code suggestions how to solve this are most welcome!

NardJ/esp8266-C64