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| Small cheap tip to VG8235 owners
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bennyroger
msx novice
Berichten: 32 |  Geplaatst: 11 Mei 2007, 23:26 |
Do you own a Philips VG8235/20 with only a single sided drive?
Don't to want to change the disk bios and replace the internal FDD?
Connect a normal FDD cable to the external port, cut wires 33 and 34 on the cable and connect them together.
Find any PC disk drive and supply power to it from either a PC power or one of these new fancy powersupplys you can buy these days for 10euros.
Power on the system! Drive B: you just connected will act as a 720kb diskdrive, you do not need to change the bios. It will format, read and write to 720kb disks. If you boot with MSX-DOS from drive a: go to drive b: and type basic, 720kb disks that starts from basic will now run from this drive.
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nikodr
msx addict
Berichten: 453 | Geplaatst: 11 Mei 2007, 23:43 |
Cool!I have exactly this Philips VG8235/20
One question:If it does not have the disk bios how is it possible?Why is this happening?
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bennyroger
msx novice
Berichten: 32 | Geplaatst: 11 Mei 2007, 23:52 |
Don't know why exactly, but my guess is that the standard chip blocks the internal connector from using 720kb, while the external is not. Have tested this on 3 different VG8235 machines and it work on all of them.
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Poltergeist
msx user
Berichten: 63 | Geplaatst: 12 Mei 2007, 00:25 |
It works this way. On my VG8235 (and I do even believe it was a 00) the internal drive was removed, replaced by a PC drive, which was connected to the external driveconnector.
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mohai
msx lover
Berichten: 118 | Geplaatst: 04 Juni 2007, 21:38 |
This is because BIOS only works with single side disks on the A drive.
I ahve used a similar trick for year on my 8235/00. If you use poke -609,201 to force the drive to no t stop, you will be able to work with double-sided disk too 
A BIOS change is needed, anyway |
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