Dec 19, 2022 19:03:00

Succeeded in repairing medical ultrasound scanner and playing DOOM

When the Linux version of the source code for the FPS game '

DOOM ' announced in 1993 was released in 1997, various versions were quickly developed by volunteers after bugs were fixed. In addition to electronic devices with screens such as printers , tractors , pregnancy test kits , and even in Twitter and 'DOOM', unofficial porting work of DOOM is being carried out every day regardless of platform or place. Buy it Fix it , a YouTube channel that buys and repairs used and junk electronic devices, has succeeded in operating DOOM by repairing and remodeling a medical ultrasonic scanner.

Portable Medical Ultrasound Scanner-Teardown + Fix + Upgrade!-YouTube


Buy it Fix it purchased a portable medical ultrasound scanner.

It is mainly used to examine the bladder, and the list price is 7950 pounds (about 1.3 million yen), but it was purchased at a mail order site for 260 pounds (about 43,000 yen).

A mechanism that visualizes the inside of the body by applying the white scanner on the left. The OS is an embedded Windows XP Embedded.

Purge the battery first. The battery was a

nickel-metal hydride rechargeable battery.

When I removed the back cover, I could see the board. The storage is compact flash with a capacity of 1 GB.

When you remove the board and turn it over, the part covered with metal appears.

After removing the metal plate, there was the main motherboard.

The motherboard itself is made in Taiwan. The CPU is AMD's

Geode processor. We also see things like RAM.

The back side is probably a chip related to video output. When I measured the voltage of the button battery on the motherboard, the output was low, so I decided to replace it.

In addition, modifications were made to attach a button battery holder.

I read the compact flash of the storage on the PC. The 1GB is partitioned in two, one half as a boot drive and the other half as a data drive.

I was able to see the details of the boot drive straight from my Windows PC. There are also files 'kidney (kidney) .dib' and 'liver (liver) .dib', apparently it seems that it can scan other than the bladder. In addition, it seems that an ini file that can change settings and scanned patient data were also found.

Buy it Fix it edited the executable file of the ultrasonic scanner with debugger software, rewrote some code and remodeled it.

Insert the compact flash into the reassembled ultrasound scanner.

By modifying the executable file of the scanner, we succeeded in adding extended functions such as adjusting the sensor depth and selecting the reading range. It is also possible to switch to debug mode by entering the password.

And I succeeded in booting DOOM via compact flash.

DOOM is working fine. The monitor display of the ultrasonic scanner was almost monochrome, but the display itself seems to have been a color liquid crystal.