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HDL versions of HP calculator CPUs http://anycpu.org/forum/viewtopic.php?f=13&t=124 |
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Author: | BigEd [ Fri Apr 04, 2014 7:12 pm ] |
Post subject: | HDL versions of HP calculator CPUs |
Might be of interest - HP's calculators ran on an inhouse CPU design with a 14 digit BCD floating point representation: http://www.hpmuseum.org/techcpu.htm http://web.cecs.pdx.edu/~rc/Projects/HD ... /vger.html and here are a couple of (re)implementations: VHDL: https://github.com/vhdlnerd/classicHp (may be a work in progress) Verilog: http://www.systemyde.com/hp41/hardware.html (via the announcement thread at http://www.hpmuseum.org/forum/thread-994-post-7809.html) |
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