ST19 with auxed card

[Kazy]

I've read that you need two physical ports for auxed card. Does a serial pci card qualify as a physical port?

Kaz

[jayel]

Yes, I'm using a pci card with 2, 9-pin serial ports.

[ruciz]

Yes. some may cause issues, but 99% of them should work. I am using 2 lava cards right now.. IRD and ISO on each card. works like a dream.

[day_tona2]

can you use a single chip to emu cause i cant get it to work it scrambles my chip every time i start the emu with aux card in it finds my card then throws out lines fast like 11 22 33 44 55 hex digets long not shure dont rember exatly what it shows.........


any ideas.......

[ruciz]

I highly suggest at least a 2 chip, get a MAX233 - they are costly (like 3x cost of a 232) but thats ALL you need. no capacitors or anything with it. just install the same as every other diagram. Should have a 10uF filter cap between the 5V and GND line.

One chip does work, for some people.. some don't work at all. The point of the MAX chip is to convert the +/- 15V COM port levels to TTL levels of 0 to +5V, so your chip/IRD isn't cooked by the high voltage, and it sees the correct levels.

heres a good read so you can appriciate what the MAX does: htxtp://www.seattlerobotics.org/encoder/aug97/cable.html

[day_tona2]

the single chip emu does work for me just dosent work if i use an aux card...
it scrambles my chip...
if i use auxshare it works....... if i use real cam it scrambles my chip

[AnonNewbie]

I highly suggest at least a 2 chip, get a MAX233 - they are costly (like 3x cost of a 232) but thats ALL you need. no capacitors or anything with it. just install the same as every other diagram. Should have a 10uF filter cap between the 5V and GND line.

One chip does work, for some people.. some don't work at all. The point of the MAX chip is to convert the +/- 15V COM port levels to TTL levels of 0 to +5V, so your chip/IRD isn't cooked by the high voltage, and it sees the correct levels.

heres a good read so you can appriciate what the MAX does: htxtp://www.seattlerobotics.org/encoder/aug97/cable.html

If you go to maximic.com you can get max233 chips for FREE (and most of their other chips). (use this link (https://shop.maxim-ic.com/storefront/searchsample.do?menuitem=Sample&event=SampleSearchLoad)) In the search box, put MAX233ACPP, then hit the "Sample Now" button then put in as many as you want (within reason). They mail them pretty quick.