Overview Features Instructions Performance Forum Downloads Products OrderV4 Reseller Contact

Welcome to the Apollo Forum

This forum is for people interested in the APOLLO CPU.
Please read the forum usage manual.



All TopicsNewsPerformanceGamesDemosApolloVampireAROSWorkbenchATARIReleases
Documentation about the Vampire hardware

V1200 HD Activity Lightpage  1 2 

Patrick Hawkins

Posts 13
24 Feb 2021 13:45


Henryk Richter wrote:

Patrick Hawkins wrote:

  Thanks. Just one other question as I'm about to assemble one. Which value resistor goes on R1 & R2? Your page mentions 4.7k & 10k resistors but doesn't say where each go?
 

  R1=10k, R2=4.7k. You can also populate both with 4.7k, which might work better in some (rare) cases of CF cards.
 
  Please note that there are also devices available which are not compatible with 5V systems wrt. HDD LEDs. I'm aware of SD-IDE adapters which have internal pull-ups to 3.3V (instead of open drain / open collector) and will cause the LED to glow permanently. That happens on the internal connector as well as my LED adapter. I do have a workaround for those but did not draw a new PCB as of yet.

I'll be testing it on a ReAmiga Rev1.5 board which has a special IDE Activity 33k resistor underneath the board to prevent the LED being contantly lit with some devices. Hopefully this should work.
 



Mateusz S.

Posts 49
24 Feb 2021 18:29


Henryk Richter wrote:

Patrick Hawkins wrote:

  Thanks. Just one other question as I'm about to assemble one. Which value resistor goes on R1 & R2? Your page mentions 4.7k & 10k resistors but doesn't say where each go?
 

  R1=10k, R2=4.7k. You can also populate both with 4.7k, which might work better in some (rare) cases of CF cards.
 
  Please note that there are also devices available which are not compatible with 5V systems wrt. HDD LEDs. I'm aware of SD-IDE adapters which have internal pull-ups to 3.3V (instead of open drain / open collector) and will cause the LED to glow permanently. That happens on the internal connector as well as my LED adapter. I do have a workaround for those but did not draw a new PCB as of yet.

Dear Henryk,
Is your solution available in any store to buy?



Nikos Pagonis

Posts 72
27 Feb 2021 17:13


Are those headers next to the IDE port (at the very edge of it) on the vampire supposed to do this job at some point? What are they for?


Henryk Richter
(Apollo Team Member)
Posts 128/ 1
28 Feb 2021 14:54


Mateusz S. wrote:

  Dear Henryk,
  Is your solution available in any store to buy?

Not that I know of. Amiga-related shops do have a tendency to clone open source hardware solutions, though.

posts 24page  1 2