Arcade Collecting > Merit/JVL Touchscreen

"Not ready error reading drive A" on Megatouch XL (upgraded to Gold). Pics!

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yotsuya:
I have a hard drive that bypasses the security check.

DaddyLongLegs:

--- Quote from: obcd on August 01, 2016, 03:17:18 pm ---Harddisks have a protection method into which you can lock the disk with a password. You can only access the harddisk contents after you unlock it with the correct password. After a power failure, it's locked again unless you disable the security after the unlock. Some arcades using harddisks utilise this technique to protect the harddisk contents. In case of the megatouch xl, it's irrelevant. It also could mean that the program can run without the security dongle in place. So basically, the software has been patched/cracked to run without security dongle.
In your case, the idea is to replace the romdisk / cdrom with a harddisk. First, you will need to find a harddisk from which the (old) mobo is capable of booting. If you remove the JP1 "eprom enable" jumper, you disable the romdisk. If you have a problem with the io card, the solution won't work as the sound chip and security dongle are also on that io card and might be inaccessible as well. So you could end up without sound or an exotic error message.
You can clean the contacts of the io board with a pencil eraser. The riser card contacts might benefit from such a cleaning as well, as they could also be oxidated. If this doesn't work, you will need to find another boot device for your mobo. A small harddisk < 10GB might work. A compact flash card and a "compact flash 2 ide" converter are the better solution as a 10Gig harddisk will likely be very old. The CF has no moving parts. You should be able to locate cheap CF cards of 1Gig - 4Gig on Ebay. The convertors 2 ide can be found there as well. There are not much electronics on such a convertor so it's safe to even buy some chinese ones.

--- End quote ---

OK thank you. I purchased a 2GB CompactFlash card and a CF to 3.5" IDE converter.

Now do I need to worry about unlocking the drive for it to be compatible with the Megatouch or something? I wouldn't mind not needing the security chip because I am worried it will die some day. I would love to get rid of the security chip if possible! It will ensure this game lasts a long, long time.

obcd:
Let's try to fix things one step at a time. Once you have the system running from a Compact Flash card, it's easier to figure out the security as you can run other dos programs on it.
The pc showing it's pci list and nothing more is basically what you would expect if it can't find a bootable drive. I notice on one of your screenshots that the drive is seen as primary slave? I assume it needs to be a primary master to be bootable.
Maybe the CF in it's adapter will behave differently. It might be worth waiting for that to arrive.
The strange sounds you hear with a harddisk connected aren't normal either. They could indicate that the power supply it's 12V line is becoming unstable. The 12V is used to power the audio amplifier chips on the io board. It's probably also used to spin the harddisk motor. A CF card might fix those issues as it doesn't need the 12V
The one thing you could do (if not done already) is copiing the files / folders on your game cd to a folder of your pc. I read that you got a link for a bootable image. Once you have the CF card, you could try to get that image on the cf card.
The first step is to get the pc to boot from that cf card. (Or from your capacity reduced harddisk.)
 

DaddyLongLegs:

--- Quote from: obcd on August 02, 2016, 06:54:41 am ---Let's try to fix things one step at a time. Once you have the system running from a Compact Flash card, it's easier to figure out the security as you can run other dos programs on it.
The pc showing it's pci list and nothing more is basically what you would expect if it can't find a bootable drive. I notice on one of your screenshots that the drive is seen as primary slave? I assume it needs to be a primary master to be bootable.
Maybe the CF in it's adapter will behave differently. It might be worth waiting for that to arrive.
The strange sounds you hear with a harddisk connected aren't normal either. They could indicate that the power supply it's 12V line is becoming unstable. The 12V is used to power the audio amplifier chips on the io board. It's probably also used to spin the harddisk motor. A CF card might fix those issues as it doesn't need the 12V
The one thing you could do (if not done already) is copiing the files / folders on your game cd to a folder of your pc. I read that you got a link for a bootable image. Once you have the CF card, you could try to get that image on the cf card.
The first step is to get the pc to boot from that cf card. (Or from your capacity reduced harddisk.)

--- End quote ---

Thanks for the reply!

Yeah I figured it could be a power problem. However, I have an external IDE hard drive enclosure that I used to power the hard drive, while still having the ribbon cable hooked up to the Megatouch. It didn't help at all but the sound crackling went away. I have spare power supplies but none seem to have the connectors for the Megatouch motherboard itself. I am assuming it's a proprietary PSU?

Anyway I had the hard drive on secondary because the Megatouch CD-ROM has to be set as "slave" so I kept it like that for the hard drive. However, I also set the hard drive to "master" and it doesn't change anything either.

Hopefully I will get the CF adapter soon, but it's coming from China so it will probably take a long time.

obcd:
Yes, delivery from China can take up to 4 weeks.
The supply isn't that special, but it's an AT supply Those were used on 386, 486 and the very first Pentium 1 pc's.
Afterwards, they started to use ATX supplies. Those have a dual row motherboard connector, have a 3V3 output and also have a standby power output. They can be switched on by the motherboard. The AT power supplies simply had a power switch interrupting the 240V (or 110V). On the Megatouch supply, this switch is bypassed and the wires are simply soldered together if I remember well. The older motherboards used 2 single row connectors with the GND (black) wires in the middle.
I can't remember if the dvd drive had to be set to slave. I do know that dos sees it as the f drive and that the game expects it's game files on that f: The d drive was a small ramdisk. Dos has the subst command that can be used to have a drive letter point to a folder on another drive. Obviously, you can also create 4 partitions on the compact flash card so that they become C D E and F
I'll check this evening if I can locate the original cdrom drive to see if it was set to master or slave. (That's within an hour)
 

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