1802ELFSimfrm1861.jpg
The video display showing the famous test program as was demonstrated in the Popular Electronics, July 1977 article "Build The COSMAC 'ELF' - part IV: Build the PIXIE Graphics Display".

The following program listing can be assembled with my Special 1802 Assembler:
90 B1 B2 B3 B4
F8 @D3START& A3
F8 3F A2
F8 @DISPINT& A1
D3
RETURN:72 70
DISPINT:22 78
22 52
C4 C4 C4
F8 @DISPINT/ B0
F8 00 A0
REFRESH:80 E2
E2 20 A0
E2 20 A0
E2 20 A0
3C @REFRESH
30 @RETURN
D3START:E2 69
3F @*
6C A4
WAIT2:37 @WAIT2
3F @*
6C 54 14
30 @WAIT2
00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
7B DE DB DE 00 00 00 00 4A 50 DA 52 00 00 00 00
42 5E AB D0 00 00 00 00 4A 42 8A 52 00 00 00 00
7B DE 8A 5E 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 07 E0 00 00 00 00 FF FF FF FF
00 06 00 01 00 00 00 01 00 7F E0 01 00 00 00 02
7F C0 3F E0 FC FF FF FE 40 0F 00 10 04 80 00 00
7F C0 3F E0 04 80 00 00 00 3F D0 40 04 80 00 00
00 0F 08 20 04 80 7A 1E 00 00 07 90 04 80 42 10
00 00 18 7F FC F0 72 1C 00 00 30 00 00 10 42 10
00 00 73 FC 00 10 7B D0 00 00 30 00 3F F0 00 00
00 00 18 0F C0 00 00 00 00 00 07 F0 00 00 00 00


Click here to install.

See Welcome Screen here.
See Main Screen here.
See New ELF II Interface here.
See Microprocessor View here.
See Tutorial Screen here.

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