Which drive uses a DMA channel?
The floppy drive uses which DMA (direct memory access) channel.
What are DMA channels?
DMA Definition. DMA channels are used by high speed devices and they allow them to communicate directly with the main memory (RAM) on our system. DMA channels can be used by sound cards, hard disk drives, CD/DVD-ROM drives, tape drives, etc. DMA is managed by DMA controller chip (8237).
Which Irqs is used for floppy disk drive?
| IRQ Level | Common Use | Comments |
|---|---|---|
| 6 | Floppy disk controller | |
| 7 | LPT1 | Sound blaster cards can use this |
| 8 | Real-time clock | Hard-wired on motherboard |
| 9 | Cascade to IRQ 2 | Wired directly to 2, sometimes tell software 9 when mean 2 |
What is a floppy Adaptor?
Floppy Drive 4-Pin Power Connector Pinout The floppy drive 4-pin power supply connector is the standard floppy drive power connector in computers today. The power connector itself is a Berg connector, sometimes referred to as a Mini-Molex connector.
Where do you put a floppy connector?
Connect the floppy drive ribbon between the drive and the the floppy drive connector on the motherboard – next to the pair of IDE controllers – making sure to similarly align the red line up with Pin 1 on the motherboard connector.
What is Floppy 3 Mode Support?
Unlike normal floppy drives, 3 mode floppy drives support three different floppy disk formats – 1.44 MB, 1.2 MB and 720 KB. Hence, their name. They allow the system to support the Japanese 1.2 MB floppy disk format, as well as the standard 1.44 MB and 720 KB (obsolete) disk formats.
What is an EPS power connector?
EPS power supplies have a 24-pin motherboard power connector and an eight-pin +12 V connector. The standard also specifies two additional four-pin 12 V connectors for more power-hungry boards (one required on 700–800 W PSUs, both required on 850 W+ PSUs).
What is a 4-pin Berg connector?
The 4-pin Berg connector is commonly known as the floppy power connector, as it was used for connecting the 3.5-inch floppy disk drive to the power supply unit. It is the most popular Berg connector.
What is Molex FDD adapter?
Description : This adapter cable converts a large 4-pin Molex connector to power standard floppy drives, zip drives, LS-120’s, etc.
What does Molex plug into?
These “Molex” connectors bring DC power to the drives inside a PC case. The large one on the right is used for disk, CD-ROM and DVD drives, while the small connector is used for floppy drives and other devices.
Where do you plug Molex into PSU?
Honorable. Your PSU should have come with two cables that had a bunch of SATA power connectors, one with Molex connectors, and one with Molex and a floppy drive connector. These cables plug into the ‘HDD’ connectors on the PSU.
What are the form factors of power supply?
Today’s power supply form factors are ATX, ATX12V v1. x, ATX12V v2. x, and micro-ATX.
What is the main power connector?
The main power connector or the 20 pin power cable is the most important cable that proceeds from the power supply. It is the power connector that sends electricity to the motherboard.