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
- Arduino IDE 1.8.10
- esp8266 board tools version 2.4.2 (important!)
- LwIP 1.4 Higher bandwidth
- CPU frequency 160MHz
- 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...
You should now see the startup screen of de C64!
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
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
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!