HP-25C Eumulator
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09-22-2014, 11:55 AM
Post: #1
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HP-25C Eumulator
Hello, I've been lurking this forum for a few months looking for information on emulators. With the information I found on this site and forum I managed to realize / port part of the nonpareil emulator into a hardware project.
Thought some of you may get a kick out of this as a lot of threads here are emulation related. The hardware is based on a MSP430G2553 mcu (16bit MCU, 512 byte RAM, 16K flash) and a 74HC164 shift register to help out the led multiplexing. There is a "slow-mode" implemented so the speed resembles the original HP-25C. I don't have a HP-25C and I can only compare it from a youtube video. Here is a video of it running a "accuracy test" via program mode. http://youtu.be/WwPM0slZro4?t=1m57s |
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