Well now, I'm surprised to see everything this system from 1984 is capable of running!
The system is currently running either MS-DOS 6.22 as the main OS, FreeDOS 8088/8086 for newer software compatibility, and MINIX 2.0.2 for UNIX kernel and application testing and compiling.
I have setup this system with some of the mTCP networking software (special thanks to M. Brutman) and have this system acting as a full-fledged FTP server.
With the 8086 CPU @ 4.77MHz and 3COM 10BASE-T NIC, it is capable of 35KB/s upload and 25KB/s download.
It may be possible to improve the speed by upgrading the CPU to an NEC V30 or V33, which are essentially 3rd party x86 CPUs capable of the Intel 8080 ISA or 80286 performance-per-clock, respectively.
Both have a nice processing capability boost, which should result in higher transfer speeds; an 80286 or 80386 CPU accelerator board is also possible, which would improve the CPU processing capability by 30% to 100%.
While this unit does not have a soundcard, it is still capable of playing games on this luxurious amber monochromatic composite MAGNAVOX Monitor 80 from 1989.
Even Freddy Krueger enjoys playing a game or two!
The benchmark program is CheckIt, and is freely available for download online.
Disk speed with the 20MB MFM HDDs is around 50KB/s, but the 2GB Compact Flash card caps out around 150KB/s; a worthy improvement for such a venerable system.
The Intel 8087 FPU @ 4.77MHz has around 50 KFLOPS of computing capability.
While this may not sound like much by today's standards, considering a NVIDIA GTX1080 has SP FP32 computational processing capabilities of over 10 TFLOPS, back in the 1980s, a FPU in such a small system was invaluable for scientists, developers, and statistics computation.
Microsoft QuickBASIC 4.5 can take full advantage of the FPU when designing 3D graphics and animation.
Computation takes around 30 seconds with only the CPU and software libraries, whereas with the FPU included, computation takes only around 9 seconds.
- AMD 8086-2 16-bit CPU was removed
- NEC V30 16-bit CPU @ 4.77MHz - 8086-compatible CPU with 8080 ISA compatibility and an 18% performance boost clock-for-clock compared to the the 8086.
With the NEC V30, the disk transfer speeds are now around 160KB/s, and FTP transfers are up from 35KB/s to 38KB/s; a modest improvement for a simple drop-in CPU upgrade.