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Offline mrbillTopic starter

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Problems booting A4000
« on: June 04, 2007, 03:06:17 AM »
I recently acquired an A4000 (with Retina BLT Z3 card, Emplant board, and a Warp Engine '040).  The first thing I did was remove the slightly-fuzzy battery; I didn't see any motherboard damage.

I don't have a monitor that will sync down to 15Khz, so it took me a couple of weeks to acquire an A520 and a "VGA Box" that goes from composite-in to VGA out.  I've tested this setup on my A2000 and it works fine (although fuzzy, of course).

The video signal chain looks like this:
A4K -> A520 -> composite to VGA Box -> LCD monitor

When I tried it on the A4000, at power-on I get a black screen, then 3-4 seconds later what I can best describe as a purple screen - solid color, no picture.

I tried removing EVERYTHING from the A4000 (disconnecting drives, etc) leaving only the Warp Engine, its onboard RAM, and the RAM that's in the sockets on the motherboard.  I also reseated the Warp Engine and all the RAM.  None of this seemed to make a difference.

The system has 40.68 ROMs (checked when I reseated the Warp Engine board).

Is this normal behavior?  Not having worked with anything but A1000 and A2000s before, I was expecting some sort of kickstart screen with the please-insert-disk animation.

Suggestions on how I can proceed are sincerely appreciated.
 

Offline mrbillTopic starter

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Re: Problems booting A4000
« Reply #1 on: June 04, 2007, 04:05:03 AM »
Sorry for the noise - apparently I just wasn't being patient enough.  After about 45 seconds, the Kickstart screen comes up as it should.
 

Offline Matt_H

Re: Problems booting A4000
« Reply #2 on: June 04, 2007, 05:29:56 AM »
3.1 ROMs have a long boot delay to accomodate long spin-up times for hard drives. Attach one and it should boot faster.
 

Offline motorollin

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Re: Problems booting A4000
« Reply #3 on: June 04, 2007, 08:07:35 AM »
Or if you want to use SCSI, I highly recommend buying a KickFlash. It will allow you to use a modified 3.1 ROM with no scsi.device which effectively disable the on-board IDE controller, thus removing the startup delay.

--
moto
Code: [Select]
10  IT\'S THE FINAL COUNTDOWN
20  FOR C = 1 TO 2
30     DA-NA-NAAAA-NAAAA DA-NA-NA-NA-NAAAA
40     DA-NA-NAAAA-NAAAA DA-NA-NA-NA-NA-NA-NAAAAA
50  NEXT C
60  NA-NA-NAAAA
70  NA-NA NA-NA-NA-NA-NAAAA NAAA-NAAAAAAAAAAA
80  GOTO 10
 

Offline duesi

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Re: Problems booting A4000
« Reply #4 on: June 04, 2007, 08:29:24 AM »
If you go SCSI (I recommend that)
You can also terminate the onboard IDE.
It's what I have done. No delay after that ;-)

You can build it yourself:

Get a 40-pin female IDE header and wire a 5K resistor between pins 3 and 39,
and between pins 5 and 39.

Pins 3 and 5 are the high-order IDE data bits.  Pin 39 is the IDE LED
connection, which is tied high.  This hack ties the two high-order IDE
data bits high, making the ROM immediately skip looking for a drive.

Plug the header onto the A4000 motherboard IDE connector, making sure it
is on correctly.

Here's one on ebay too:
IDE Killer on ebay

good luck
A4000D CS060/MKII with SCSI, CV64/4MB, 128MB Fast, ACARD AEC-7720U SCSI-IDE,80GB Samsung HDD, Yamaha CDRW, XSurf2, OS3.9BB2
A500,1MB Chip Kick1.3/3.1,GVP A500+ 540MB HDD and 8MB Fast,GVP DSS 8Bit Sampler
 

Offline motorollin

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Re: Problems booting A4000
« Reply #5 on: June 04, 2007, 08:31:32 AM »
I tried to build one of those IDE killers myself but I could never get it working. You can also contact DJBase and he can make them.

--
moto
Code: [Select]
10  IT\'S THE FINAL COUNTDOWN
20  FOR C = 1 TO 2
30     DA-NA-NAAAA-NAAAA DA-NA-NA-NA-NAAAA
40     DA-NA-NAAAA-NAAAA DA-NA-NA-NA-NA-NA-NAAAAA
50  NEXT C
60  NA-NA-NAAAA
70  NA-NA NA-NA-NA-NA-NAAAA NAAA-NAAAAAAAAAAA
80  GOTO 10
 

Offline duesi

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Re: Problems booting A4000
« Reply #6 on: June 04, 2007, 08:44:18 AM »
@motorollin

This hack works for sure.
I never had any Problem ;-)
A4000D CS060/MKII with SCSI, CV64/4MB, 128MB Fast, ACARD AEC-7720U SCSI-IDE,80GB Samsung HDD, Yamaha CDRW, XSurf2, OS3.9BB2
A500,1MB Chip Kick1.3/3.1,GVP A500+ 540MB HDD and 8MB Fast,GVP DSS 8Bit Sampler
 

Offline motorollin

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Re: Problems booting A4000
« Reply #7 on: June 04, 2007, 09:17:02 AM »
I tried to build one for my A1200 and then for my A4000. I couldn't get either of them to work. The resistors I used were defnitely the correct values and definitely connected to the correct pins. Maybe I used the wrong type of resistor (there are yellow and blue ones, right?)

--
moto
Code: [Select]
10  IT\'S THE FINAL COUNTDOWN
20  FOR C = 1 TO 2
30     DA-NA-NAAAA-NAAAA DA-NA-NA-NA-NAAAA
40     DA-NA-NAAAA-NAAAA DA-NA-NA-NA-NA-NA-NAAAAA
50  NEXT C
60  NA-NA-NAAAA
70  NA-NA NA-NA-NA-NA-NAAAA NAAA-NAAAAAAAAAAA
80  GOTO 10
 

Offline duesi

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Re: Problems booting A4000
« Reply #8 on: June 04, 2007, 10:11:41 AM »
@motorollin

I never tried this on a A1200
Resistor Color Code
A4000D CS060/MKII with SCSI, CV64/4MB, 128MB Fast, ACARD AEC-7720U SCSI-IDE,80GB Samsung HDD, Yamaha CDRW, XSurf2, OS3.9BB2
A500,1MB Chip Kick1.3/3.1,GVP A500+ 540MB HDD and 8MB Fast,GVP DSS 8Bit Sampler