Arcade Collecting > Merit/JVL Touchscreen
Boot Issue With Megatouch XL Gold
ice2921:
So ive tried a few things here:
* Re-seated the I/O board
* cleaned the I/O board connectors
* re-seated and cleaned the memory modules
* re-seated the dallas and EPROM chips
It seems as though whenever I re-seat the U12 chip I get all the way to the " Unit 0 MASTER IRQ 14 I/O address 0x81RO" "789" or "DISC BOOT FAILURE. INSERT SYSTEM DISK AND PRESS ENTER" messages.
I have also been trying to bypass the onboard boot by removing the JP1 jumper and installing freedos. Now it just sits at the following screen:
obcd:
What procedure did you follow to get freedos on that disk?
I have seen such issues because the megatouch mobo was interpreting the disk parameters different than expected.
You should set the system bios harddisk to LBA. Otherwise, it can't find freedos on your disk partition.
I also had problems with freedos and fat32 partitions. fat partitions worked fine.
Sorry, just noticed it is using LBA (on your boot screen)
This leaves my first question.
ice2921:
Thanks the disk is formatted in fat32 I will try as just FAT.As far as procedures go I, was not following anything in particular. I know that at some point I will need copy my gold CD to one of the DOS partitions but I wanted to see if I could at least get it to boot to DOS first.
On a side note when I boot using the EPROM it always fails at various stages. After further research it does not seem as though the messageUnit 0 MASTER IRQ 14 I/O address 0x81RO" "789" is actually an error, the device is simply freezing there. Have you done a freeDOS boot on one of these things before?
ice2921:
OK so I am getting someplace. I was able to get FREEDOS loaded, but now I have to figure out how to get the cd files on to the disk.
ice2921:
--- Quote from: obcd on May 31, 2016, 07:02:25 am ---It's possible to use a harddrive. I use a compact flash card with a cf2ide adapter.
From the Merit pc point of view, it's identical to a harddrive.
I once started a tutorial for someone who PM'ed me here with the same question.
He suddenly disappeared, so I never finished and posted the stuff.
First, you will need to copy the cd contents in a folder on your pc.
It's just a regular copy of all the stuff, no need to create an iso.
I used freedos on the compact flash card and booted from there. It gave me more options to experiment with the system.
The Merit XL original boots from a flash disk on it's io card. You can disable that with a jumper on the io board.
Removing JP1 normally does the trick.
Drive letter D was a small ramdisk
Drive letter F was the cdrom drive. I used the freedos subst or assign command to point the folder with the contents of the cd rom to that drive letter. I am sure I can dig up more details if needed.
--- End quote ---
Can you tell me what you did here? Especially with the assign command. I need to somehow get the device to boot to the f drive.
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