Modifying BIOS to Add Dual Floppy Drive Support

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#1 | Modifying BIOS to Add Dual Floppy Drive Support datum

Mon Apr 24, 2017 10:38 am (Last edited: Mon Feb 10, 2020 4:54 pm)

BIOS MOD for Dual Floppy Support possible?

u10321_XPLives.html

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#2 | RE: AsRock Fatal1ty Professional Z68 and Z77 - Modifying BIOS to bring back Dual Floppy Drive Support datum

Mon Apr 24, 2017 12:39 pm (Last edited: Mon Apr 24, 2017 1:40 pm)

Dual Floppy drive support started disappearing from the BIOS as early as 2004/2005, so I don't think it will be added back anytime soon.
I have looked through the BIOS for each board with AMIBCP 4.55.0070 and could not see any useful hidden options.

The options that were visible under "Super IO Configuration" for both boards are;
Onboard Floppy Controller - Enable / Disable
Change Settings - IO3F0h; IRQ=6; DMA=2; (Floppy Drive Address, Interrupt Request and Direct Memory Access)
Device Mode - Read Write / Write Protect

You could always get 2 x USB floppy drives but I assume you've already thought of that and USB floppy drives aren't fit for purpose.
You would probably have more luck purchasing an old Pentium 4 (socket 462/478/775) CPU + Motherboard + RAM that does have dual floppy support.

EDIT by Pacman: Please do not link non free AMI utilities.

1. EVGA Z370 Classified K, Core i9-9900KS @ 5.0 GHz, 4x8GB Patriot Viper Steel DDR4-4133 MHz,
Samsung 970 EVO Plus NVMe 2TB, Asus 2070 Mini OC, Corsair AX850
2. Gigabyte Z390 UD, Core i7-9700K @ 4.9 GHz, 4x8GB Patriot Viper Steel DDR4-3733 MHz,
Samsung 950 Pro NVMe 512MB, GALAX GTX 1060 OC, EVGA G2 850W

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#3 | Modifying BIOS to bring back Dual Floppy Drive Support datum

Tue Apr 25, 2017 5:37 pm (Last edited: Mon Feb 10, 2020 4:53 pm)

You are correct I've tested the USB floppies on it. The BIOS only limits 1 USB drive to be accessible in DOS. For example switching to B: redirects to A:. I'm trying to get pure hardware regular floppy drives dual linked to the FDC. I'll PM the info.

u10321_XPLives.html

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[Guide] How to switch from legacy BIOS to UEFI mode painlessly(without altering your partitions) � � Need help modding Gigabyte GA-7PESH2 (C602)

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