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visual6502 org visual6502 org digging into ancient microchips with hot sulfuric acid friday november 27 2015 the visual arm1 today is the 25th anniversary of arm ltd uk to celebrate and honor their amazing work we present the visual arm1 created in collaboration with some of arm s founding engineers designed by sophie wilson and steve furber before there was an arm ltd the acorn risc machine was the first of a line of processors that power our cell phones and tablets today unlike previous projects based on microscope images the visual arm was created from a resurrected cif chip layout file used under license agreement with arm we also photographed one of the few arm1 chips at very high resolution this photograph is featured at the centre for computing history in cambridge uk credit goes to arm founding engineers john biggs for inspiring the project discovering the tape and recovering a usable cif file lee smith for spotting the variable record format used to encode the file an artifact of the vms on acorn s vax that at first appeared to be widespread corruption of the file to cambridge university computing services for reading the exabyte tape and to arm founder dave howard for help unraveling the vlsi cif dialect our chip simulation and visualization was developed by barry silverman brian silverman ed spittles and greg james information age the microchip that changed our world unsung heros of tech arm creators sophie wilson and steve furber meet arm1 grandfather of today s mobile tablet cpus wikipedia arm architecture brief history and technical details posted by visual6502 org at 11 00 am 174 comments email this blogthis share to x share to facebook share to pinterest saturday october 11 2014 atari 2600 simulation full source code and data for our transistor level simulation of the atari 2600 is up on github https github com gregjames sim2600 this python version uses the same 6502 circuit node names and ids as our web based javascript version but has no polygon geometry it includes our full netlist model of the atari tia and a simple emulation of the pia aka riot and program rom leave it running long enough and it ll render frames from classic games the simulation provides a cycle accurate picture of what the console is doing based on the physical parts of its microchips posted by visual6502 org at 10 49 pm 133 comments email this blogthis share to x share to facebook share to pinterest friday february 8 2013 mos 6702 superpet security dongle thanks to mike naberezny for this interesting undocumented hardware protection dongle posted by visual6502 org at 11 46 pm 89 comments email this blogthis share to x share to facebook share to pinterest saturday january 26 2013 ferranti ula 9c018e7 thanks to ivo van poorten of the netherlands for sending this uncommitted logic array ula by ferranti christian sattler in the uk photographed and delayered the chip in november 2012 posted by visual6502 org at 9 22 pm 81 comments email this blogthis share to x share to facebook share to pinterest atari pokey c012294 substrate while our decapping and delayering here on the west coast have taken a short break christian sattler in the uk has stepped up and run several chips through the chemistry among them is our atari pokey christian also has an interactive browser to view the aligned layers enjoy posted by visual6502 org at 9 19 pm 59 comments email this blogthis share to x share to facebook share to pinterest friday january 25 2013 8085 substrate and layers christian sattler has delayered and photographed our amd 8085 pavel zima then made quick work of capturing polygons for the substrate and polysilicon he s also got a simulation up and running posted by visual6502 org at 12 10 am 160 comments email this blogthis share to x share to facebook share to pinterest monday july 23 2012 nintendo nes rp2c02 die shots thanks to joey parsell in indiana for the chips posted by visual6502 org at 3 44 pm 35 comments email this blogthis share to x share to facebook share to pinterest older posts home subscribe to posts atom followers blog archive 2015 1 november 1 the visual arm1 2014 1 october 1 2013 4 february 1 january 3 2012 4 july 2 february 1 january 1 2011 12 december 1 august 2 july 3 may 3 april 2 february 1 2010 5 december 1 november 1 september 3 about me visual6502 org view my complete profile awesome inc theme powered by blogger