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danieladinugroho.net
 

Daniel Adi Nugroho dot Net

...because a man can’t just sit around

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danieladinugroho.net

My Location on Google Maps APRS

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Since March 2010 I've been experimenting with my single-band VHF radio, Yaesu FT-1900R. I've made some contacts as far as 25 km by voice, but it's very thrilling to know that I can directly reach a mountain-top digipeater 92 km away on APRS, just using 10 watts of power!

This is my location on APRS:

Have fun!


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Last Updated on Wednesday, 14 April 2010 18:51
 

Reviving A Relic from the Dawn of 32-bit Microprocessor Era - Part 1: The Salvage

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I found myself staring at my first PC, a dusty yellowish box that served me well when I was a teenager, helped me a lot on my school projects. I planned to revive this relic, and bring it to Jakarta, and make a good use of it. I quickly pulled it from its resting place for many years, and cleaned it from the dust. A house lizard jumped out when I opened the casing, as well as numerous insects that lived between the electronic boards.

Within a few minutes, I have completely disassembled it (except for its internal power supply unit), detached its main board, video card, a legacy I/O controller card, one 5.25 inch floppy drive, and one 3.5 inch floppy drive. It's a computer from the era when 32-bit processors starts to dominate the world. It has an AMD Am386DX-40 CPU running at 40 MHz clock speed, it has many banks of SDRAM chips, totaling 8 MB. The VGA card has 512 KB of RAM. The CPU is permanently soldered right on the board, instead of sitting on a socket. Since there is no cooling mechanism surrounding it, I can easily read the text printed on its chip. It says “Microsoft Windows Compatible”, below an old Windows logo imprinted on the face of the chip.

Am368DX-40 CPU embedded on the mainboard


It must have been an impressive machine when it was first purchased in March 1994. I can recall my awe when I first operated it sometime in 1997, my auntie bought it used for me. It was really a treat to the eyes of a person who has never used any GUI-based systems before. I still remember the thrill of clicking those little icons on Windows 3.1 with a funny thing called mouse....


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Last Updated on Friday, 16 April 2010 13:48
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