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<blockquote data-quote="Channel Hopper" data-source="post: 1070917" data-attributes="member: 175144"><p>The Space Invader Game, from Entex Tokyo (first edition) manufactured in 1980. At the heart is a Texas Instruments MP1211 processor running a very simple LED matrix and counter, that is cleverly edited by the display mask from a four to three digit display. Unfortunately the case has been neglected and stepped on by the previous owner along with the battery compartment lid and connections suffering acid damage. But once reassembled with a thorough clean and replacement of the sellotape retainer over the display, everything works, though the gameplay is rudimentary.</p><p></p><p>High score so far is 230 on the beginner setting.</p><p></p><p>Some reports say the original manufacturing contract was for 100,000 units, eventually selling over 750,000 worldwide.</p><p></p><p>MP1211 is a TMS1100 series chip (or possibly a 1000), which I believe also powered the original BigTrak, posted earlier in this section.</p><p>[URL unfurl="true"]https://www.satellites.co.uk/forums/threads/bigtrak-and-bigtrak-jr-coding-from-the-70s.175571/[/URL]</p><p></p><p>[URL unfurl="true"]http://www.datamath.org/Story/Intel.htm#The%20TMS1000%20Single%20Chip%20Calulators[/URL]</p><p></p><p>[ATTACH=full]124153[/ATTACH][ATTACH=full]124154[/ATTACH][ATTACH=full]124155[/ATTACH][ATTACH=full]124156[/ATTACH][ATTACH=full]124157[/ATTACH][ATTACH=full]124158[/ATTACH][ATTACH=full]124159[/ATTACH][ATTACH=full]124160[/ATTACH]</p></blockquote><p></p>
[QUOTE="Channel Hopper, post: 1070917, member: 175144"] The Space Invader Game, from Entex Tokyo (first edition) manufactured in 1980. At the heart is a Texas Instruments MP1211 processor running a very simple LED matrix and counter, that is cleverly edited by the display mask from a four to three digit display. Unfortunately the case has been neglected and stepped on by the previous owner along with the battery compartment lid and connections suffering acid damage. But once reassembled with a thorough clean and replacement of the sellotape retainer over the display, everything works, though the gameplay is rudimentary. High score so far is 230 on the beginner setting. Some reports say the original manufacturing contract was for 100,000 units, eventually selling over 750,000 worldwide. MP1211 is a TMS1100 series chip (or possibly a 1000), which I believe also powered the original BigTrak, posted earlier in this section. [URL unfurl="true"]https://www.satellites.co.uk/forums/threads/bigtrak-and-bigtrak-jr-coding-from-the-70s.175571/[/URL] [URL unfurl="true"]http://www.datamath.org/Story/Intel.htm#The%20TMS1000%20Single%20Chip%20Calulators[/URL] [ATTACH type="full"]124153[/ATTACH][ATTACH type="full"]124154[/ATTACH][ATTACH type="full"]124155[/ATTACH][ATTACH type="full"]124156[/ATTACH][ATTACH type="full"]124157[/ATTACH][ATTACH type="full"]124158[/ATTACH][ATTACH type="full"]124159[/ATTACH][ATTACH type="full"]124160[/ATTACH] [/QUOTE]
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