Comment by rasz

>IBM PS/1 is that they were upgradable. Contrary to PC clones where everything was often soldered, these came with an Intel Overdrive socket to upgrade the CPU, and extra slots to increase the L1 cache, RAM, and VRAM.

Plenty PS/1 came with everything soldered on and missing pinouts for CPU socket/ram/cache, LPX form factor makes you married to the case. Mom and pop build PCs were kings of expandability, everything standard off the shelf, could continuously upgrade step by step component after component all the way to ~2000.

PS/1 was a funny series of IBM computers. The idea was to make something low end and cheap, that necessitated using common third party components resulting in more standard and compatible PC than stupid MCA/ESDI PS/2 line. Epictronics loves PS/2 line and has plenty of repair videos, its a never ending stream of WTF where they thinking combined with oh well that part is unobtanium now, IBM IBMing.

>"Hanging note bug"[9]. I had to go to the next level and get a MIDI card.

SB16 firmware was decompiled and bug patched out, fix requires replacing microcontroller with $3 Atmel. All in all SB16 was a rushed (early reviews complained about glitchy sound, not working ASP) poor product. I associate it with hissy sound and lack of SB Pro Stereo mode support.