Welcome, Guest. Please login or register.
Amiga Kit Amiga Store Iridium Banner AMIStore App Store A1200/A600 4xIDE Interface

AuthorTopic: GVP Spectrum defective - replacement advice?  (Read 2549 times)

0 Members and 1 Guest are viewing this topic.

Offline Matt_H

Re: GVP Spectrum defective - replacement advice?
« Reply #30 on: October 20, 2021, 04:35:47 AM »
Ah ha - thanks.  It was ClickToFront.

As far as I'm aware, that's not possible. ClickToFront doesn't create a window. It must have been something else. Great that it's working now, but be prepared to encounter that message again in the future.
 

Offline utri007

Re: GVP Spectrum defective - replacement advice?
« Reply #31 on: October 20, 2021, 09:27:58 AM »
If you have tested screen mode, you can just click save and reboot Amiga. If you haven't tested screen, you might end up to have screen wich is not displayable with your monitor.

If so, you need to boot early startup menu, choose boot without startup-sequence and then go to system:prefs/env/sys drawer and delete screenmode.prefs
ACube Sam 440ep Flex 800mhz, 1gb ram and 240gb hd and OS4.1FE
A1200 Micronic tower, OS3.9, Apollo 060 66mhz, xPert Merlin, Delfina Lite and Micronic Scandy, 500Gb hd, 66mb ram, DVD-burner and WLAN.
A1200 desktop, OS3.9, Blizzard 060 66mhz, 66mb ram, Ide Fix Express with 160Gb HD and WLAN
A500 OS2.1, GVP+HD8 with 4mb ram, 1mb chip ram and 4gb HD
Commodore CDTV KS3.1, 1mb chip, 4mb fast ram and IDE HD
 

Offline Michele31415

Re: GVP Spectrum defective - replacement advice?
« Reply #32 on: November 03, 2021, 06:05:04 PM »
Ah ha - thanks.  It was ClickToFront.

As far as I'm aware, that's not possible. ClickToFront doesn't create a window. It must have been something else. Great that it's working now, but be prepared to encounter that message again in the future.
It's possible I was mistaken.  In any case it's only an issue if I want to change resolutions.  Once I have something to my liking I won't need to do that again.
Active: B2000 4.4, A2630, GVP 2000 HC+8, DKB 2632, SCSI2SD, Gotek, Deneb USB, XSurf 3cc, CD ROM, Megachip 2000, ECS Agnus, Denise, OS 3.9, GVP Spectrum EGS 28/24, Silicon Springs GOMF
Retired: A2088, 8-Up, A2090a, Oktagon 2008, Kitchen Sync
Busted: A2091
 

Offline Michele31415

Re: GVP Spectrum defective - replacement advice?
« Reply #33 on: November 03, 2021, 06:10:21 PM »
If you have tested screen mode, you can just click save and reboot Amiga. If you haven't tested screen, you might end up to have screen wich is not displayable with your monitor.

If so, you need to boot early startup menu, choose boot without startup-sequence and then go to system:prefs/env/sys drawer and delete screenmode.prefs
Thanks - that's handy to knbow about screenmode.prefs.  Right now it does boot directly to the LCD.

But what if I want to do a L+R preboot menu?  That happens before the Spectrum is activated.  Before I go to the trouble of making a DB23 -> DB9 jumper cable, is the Spectrum pass-thru mode just straight pass-thru or does it upconvert the scanning frequency?  Because my LCD will not scan down to 15 KHz.  In fact none of my LCD monitors will.  I guess LCD wasn't really a thing yet when this board was designed.  I'd like to get rid of my CRT entirely but maybe I need to keep it around anyway.
Active: B2000 4.4, A2630, GVP 2000 HC+8, DKB 2632, SCSI2SD, Gotek, Deneb USB, XSurf 3cc, CD ROM, Megachip 2000, ECS Agnus, Denise, OS 3.9, GVP Spectrum EGS 28/24, Silicon Springs GOMF
Retired: A2088, 8-Up, A2090a, Oktagon 2008, Kitchen Sync
Busted: A2091
 

Offline Pat the Cat

Re: GVP Spectrum defective - replacement advice?
« Reply #34 on: November 04, 2021, 08:00:54 PM »
Am pretty sure it defaults to passthrough so you should be OK.

One way to find out is build the cable.

Chris Edwards would know, you could try talking to him via Youtube or Reddit. He has a GVP card and uses  the passthrough.
"To recurse is human. To iterate, divine."

A1200, Vanilla, Surf Squirrel, SD Card, KS 3.0/3.z, PCMCIA dev
A500, Vanilla, A570, Rev 5, KS 1.2/1.3 Testbench system
Rasp Pi, UAE4ARM, 3D laser scanner, experimental, hoping for AmigaOS4Arm, based on Watterott Fabscan Pi
 

Offline QuikSanz

Re: GVP Spectrum defective - replacement advice?
« Reply #35 on: November 04, 2021, 08:51:45 PM »
The card will not scan double. Use an Indivision ECS, it's now version 3 and your Spectrum will happily switch it for you.
Find it here. " https://icomp.de/shop-icomp/en/shop/product/Flickerfixer_Scandoubler.html?flifi_type=OCS_ECS "

Chris
 
The following users thanked this post: Pat the Cat

Offline Michele31415

Re: GVP Spectrum defective - replacement advice?
« Reply #36 on: November 05, 2021, 06:25:10 PM »
Am pretty sure it defaults to passthrough so you should be OK.

One way to find out is build the cable.
Thanks.  I did, it doesn't (sync).
Active: B2000 4.4, A2630, GVP 2000 HC+8, DKB 2632, SCSI2SD, Gotek, Deneb USB, XSurf 3cc, CD ROM, Megachip 2000, ECS Agnus, Denise, OS 3.9, GVP Spectrum EGS 28/24, Silicon Springs GOMF
Retired: A2088, 8-Up, A2090a, Oktagon 2008, Kitchen Sync
Busted: A2091
 

Offline Michele31415

Re: GVP Spectrum defective - replacement advice?
« Reply #37 on: November 05, 2021, 06:36:00 PM »
The card will not scan double. Use an Indivision ECS, it's now version 3 and your Spectrum will happily switch it for you.
Find it here. " https://icomp.de/shop-icomp/en/shop/product/Flickerfixer_Scandoubler.html?flifi_type=OCS_ECS "
Ah!  You got me thinking.  When I said "no LCD monitors support 15 KHz." I should have said "no LCD monitors in my house support 15 kHz."  Turns out there's plenty of LCD monitors that do support 15 kHz.  Here's a great summary in chart form: http://15khz.wikidot.com

Some of them even specifically mention the word Amiga in the comments.  I ended up oirdering a Dell P2214Hb from Ebay because it got good compatibility reviews and it's just about the same size as my 21" CRT.  And it was about half the cost of the Indivision, and I don't need to futz around with cables or connectors.  And they offer free returns if it doesn't work out.  The Spectrum pass-thru cable I already made should work with this.

I will keep you posted with how it turns out when I get it.
Active: B2000 4.4, A2630, GVP 2000 HC+8, DKB 2632, SCSI2SD, Gotek, Deneb USB, XSurf 3cc, CD ROM, Megachip 2000, ECS Agnus, Denise, OS 3.9, GVP Spectrum EGS 28/24, Silicon Springs GOMF
Retired: A2088, 8-Up, A2090a, Oktagon 2008, Kitchen Sync
Busted: A2091
 

Offline QuikSanz

Re: GVP Spectrum defective - replacement advice?
« Reply #38 on: November 07, 2021, 12:00:33 AM »
Be advised, LCD's typically do not have much in the way of "persistence ", you may find some slow refresh/scan rates annoying causing eye fatigue.

Chris
 

Offline Michele31415

Re: GVP Spectrum defective - replacement advice?
« Reply #39 on: November 07, 2021, 03:44:56 PM »
Good point.  I guess I'll see when I get it.  Anyway, my main motivation is just to be able to run preboot dagnostics occasionally so it shouldn't be much of an issue.  Well that and maybe a few rounds of Marble Madness :-)
Active: B2000 4.4, A2630, GVP 2000 HC+8, DKB 2632, SCSI2SD, Gotek, Deneb USB, XSurf 3cc, CD ROM, Megachip 2000, ECS Agnus, Denise, OS 3.9, GVP Spectrum EGS 28/24, Silicon Springs GOMF
Retired: A2088, 8-Up, A2090a, Oktagon 2008, Kitchen Sync
Busted: A2091
 

Offline Michele31415

Re: GVP Spectrum defective - replacement advice?
« Reply #40 on: November 13, 2021, 04:32:23 PM »
OK, I got my new LCD monitor, a Dell P2214HB.  I connected my DB23 - DB9 passthru cable from the Amiga to the Spectrum, connected the monitor to the Spectrum VGA port and booted.  And it works fine.  It works great, in fact.  The monitor auto-switches the scan rate once the Picasso96 monitor is activated and I can still use the LCD to do a L+R diagnostic boot.  Games that want their own private video modes (like Marble Madness) also work fine.  No glitching, flickering, tearing, or any video defects at all - just a nice rock-solid stable image.   ;D
Active: B2000 4.4, A2630, GVP 2000 HC+8, DKB 2632, SCSI2SD, Gotek, Deneb USB, XSurf 3cc, CD ROM, Megachip 2000, ECS Agnus, Denise, OS 3.9, GVP Spectrum EGS 28/24, Silicon Springs GOMF
Retired: A2088, 8-Up, A2090a, Oktagon 2008, Kitchen Sync
Busted: A2091
 

Offline mechy

Re: GVP Spectrum defective - replacement advice?
« Reply #41 on: November 17, 2021, 05:51:04 AM »
Can you boot into PAL HiRes Laced and see if the monitor will handle workbench? Maybe try a pal game?