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Re: Icky - Progress
Posted: 26 Sep 2018 19:45
by PhilC
So, to confirm, I don't get the flashing on my crt tv but the colours are a tad on the bright side, with the green.
20180926_194322.jpg
The green is literally glow in the dark bright but my cable doesn't have any resistors on the rgb lines.
Re: Icky - Progress
Posted: 26 Sep 2018 19:53
by stephen_usher
Forgottenmyname wrote: 26 Sep 2018 19:45
The green is literally glow in the dark bright but my cable doesn't have any resistors on the rgb lines.
I thought that that was normal on the original ST.
Re: Icky - Progress
Posted: 26 Sep 2018 19:56
by troed
Yeah I'd put 150 Ohm on each of the RGB lines if it's that bright.
my reason for asking if the flash happened on another screen is that very few things in an ST could cause that, while a modern flat screen can do anything it likes when it detects the slightest disturbance in the signal :) So the "flash" might in itself only point to something that's a tiny bit unstable in the hsync or vsync etc.
Re: Icky - Progress
Posted: 26 Sep 2018 20:01
by PhilC
Hi Troed, yeah that's what I thought, with Icky using an LCD.
Will pop some 150ohm resistors in next time I do the cable. Until then I shall wear sunglasses. 8-)
Re: Icky - Progress
Posted: 26 Sep 2018 21:38
by exxos
Are you using CSYNC or B&H sync ? Try both either way.. see what happens... IIRC my old TV's never used to work right with seperate H&V sync. But like mentioned before, the voltage might just be out of spec to work on the monitor.
Re: Icky - Progress
Posted: 26 Sep 2018 21:48
by PhilC
My cable is wired for CSync at the moment if I remember correctly.
Will see if I have any more plugs etc to make another but you know how much we love soldering monitor plugs.
Re: Icky - Progress
Posted: 26 Sep 2018 22:23
by exxos
Just looking at the floppy circuit, can't find anything wrong yet (only just got home) but I didn't connected DRIVE1 select to the floppy cable... AFAIK 2 floppy drives on the same cable has never even been tried, but I am assuming it doesn't need the second line for "drive 1" anyway...
I'm also assuming i've not confused drive0/1 select up on the internal cable as well.. I don't think so....
EDIT:
DRIVE1 isn't connected on the MEGA ST on the internal cable.. So that can't be the problem...
Re: Icky - Progress
Posted: 26 Sep 2018 22:32
by troed
exxos wrote: 26 Sep 2018 22:23AFAIK 2 floppy drives on the same cable has never even been tried
I'm running both an internal floppy as well as an internal HxC off the single cable in my STE. DS0/DS1 (wires 10 and 12) and a single MOTOR ON works just fine.
Re: Icky - Progress
Posted: 26 Sep 2018 22:37
by Icky
exxos wrote: 26 Sep 2018 22:23
Just looking at the floppy circuit, can't find anything wrong yet (only just got home) but I didn't connected DRIVE1 select to the floppy cable... AFAIK 2 floppy drives on the same cable has never even been tried, but I am assuming it doesn't need the second line for "drive 1" anyway...
I'm also assuming i've not confused drive0/1 select up on the internal cable as well.. I don't think so....
EDIT:
DRIVE1 isn't connected on the MEGA ST on the internal cable.. So that can't be the problem...
I just tried an external drive and that isn't recognised at all as a drive.
Re: Icky - Progress
Posted: 26 Sep 2018 22:42
by exxos
Might be a idea to scope out the RDY line.. I've had a lot of trouble with that on the STE..
I took a quick look at the audio amp, its actually got more gain than the original ST amp :shrug: