![]() If you think that emulating a CPU is a big problem - it is, but you have to keep in mind that processors like the 6502 have only a single byte op code. There are a number of 6502 emulators including some in JavaScript. So far we only have an account of how the CPU was emulated. Matt Godbolt has just created an open source emulation of a 32K BBC Micro model B, jsbeeb, using nothing but standard JavaScript and what is really noteworthy is that he has started to describe how it all works. ![]() It was also the inspiration for the amazingly successful Raspberry Pi - which has a model A and B just like the BBC Micro to show its roots. The BBC Micro is a special computer because it introduced a generation in the UK to programming and it led to the creation of the ARM processor that is almost universal in mobile devices. What can be done with JavaScript today is impressive, but is emulating a 32K BBC Micro an indication of how powerful JavaScript is or is it an indication of how feeble home computers were? Now you can try it out in JavaScript in your browser. The BBC Micro was a revolutionary computer that had a worldwide impact. ![]()
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