First post, by mathew7
Hello,
I tried to put a slim laptop DVD-ROM (RW actually) with an adapter and it does not work on ISA adapters.
More specific:
- works on Pentium integrated IDE (don't have any 486)
- works on ESS1868 with IDE connector
- does not work with multi-port+IDE+FDD adapter (on 286, 386 or Pentium with integrated ones disabled)
Normal 5.25" CD/DVD drives work in all configurations, just the slim+adapter won't. Tried 3 slims (CD and DVD) with 2 adapters.
Not work = also HWINF 6.12 does not see them. Even with a primary device on the cable, which is seen (so port is present and working).
Initially I though maybe a 5V vs 3.3V issue or a CMOS vs TTL, but I see the ESS card has some lines going directly to the ISA bus (assuming data and address lines), and only some (maybe) control lines go through another chip (which got me thinking about CMOS vs TTL).
So anybody could shed some light?
The idea is that the laptop drives are smaller. That's all for using them vs desktop drives. I'm still at motherboard on desk playing.
Have a nice day!