First post, by Paar
- Rank
- Member
I tried to tinker with my 486 motherboard again (Chicony CH-471B) and managed to finally get everything to work properly. Apart from one thing - I have speed issues regarding integrated VLB IDE controller (in my case Appian AD/2). I use IDE to SD adapter in my system with fast SD card (20MB/s write speed in theory) and when used with this integrated controller I'm getting around 1500kB/s reading speed. That's rather low as I can get the same speed with the integrated ISA IDE controller. Tried to change some settings in BIOS and after chaning the system memory from "non-cacheable" to "cacheable" the speed raised to around 1600kB/s. Better but still not great.
Tried my Winbond VLB IDE card and with that I got around 2500kB/s reading speed which is much better (the old hardware still limits the potential peformance of the SD adapter but I'm fine with that). The question is why is the Appian controller so much slower? Am I doing something wrong or is it just piece of junk?
I'm including picture of the Speedsys results for the Appian controller. Thanks for any tips!