Display list top? Display list format. If 0x set, no matrix. Vertex data: 4x or 5x 4 words. Set to 0x before drawing the background. Z-buffer read disable? Polygon data format. Vertex data: 3x triangle or 4x quad 4 words.
HUD elements set 0xff. Video chip memory map. Probably a status register. VB IRQ ack or buffer swap? It's defined as vendor-specific, so it probably shouldn't be up Drives a counter on PPC side. An exact copy is also included in pwrshovl harddisk. Quantum Fireball 4. Formatted Capacity 4, Logical Heads 9. Logical Cylinders 14, Physical Heads 6.
Physical Disks 3. Sectors Per Drive 8,, Average Seek Time Buffer Size K. Tsukin-hen V2. Do not exceed the specified length for the mounting screws. The specified screw length allows full use of the mounting-hole threads, while avoiding damaging or placing unwanted stress on the PCB.
To avoid stripping the mounting-hole threads, the maximum torque applied to the mounting screws must not exceed 8 inch-pounds. A maximum screw length of 0. NOTE It is highly recommended that the drive is hard mounted on to the chassis of the system being used for general operation, as well as for test purposes.
If, for Bench-test purposes or any other reason, it is not possible to mount the drive in the system chassis, Quantum recommends that the drive be placed on a high-density anti-static foam pad. Failure to use a flat and stable surface can result in erroneous errors during testing. Clearance Clearance from the drive - except mounting surfaces - to any surface must be 0.
Drive Cable and Connector The hard disk drive connects to the host computer by means of a cable. This cable contains a pin connector that plug into the drive, and a pin connector that plugs into the host computer.
At the host end, the cable plugs into either an adapter board residing in a host expansion slot or an on-board IDE adapter. If two drives are connected by a cable with two pin drive connectors, the cable-select feature of the Fireball ST AT automatically configure each as drive 0 or drive 1 depending on the configuration of pin 28 on the connector.
To prevent the possibility of incorrect installation, has been keyed by removing Pin 20, which ensures that a connector cannot be installed upside down. To connect the drive to the motherboard, use a pin ribbon cable 18 inches in length or shorter. Ensure that pin 1 of the drive is connected to pin 1 of the motherboard connector.
Adapter Board Installation Carefully read the manual that accompanies your adapter board before installing it. Make sure that all the jumpers are set properly and that there are no addressing or signal conflicts. You must also investigate to see if your AT-compatible system contains a combination floppy and hard disk controller board.
If it does, you must disable the hard disk drive controller functions on the controller board before proceeding. Again, make sure that you have set all jumper straps on the adapter board to avoid addressing and signal conflicts. Connecting the Adapter Board and the Drive Use a pin ribbon cable to connect the drive to the board. Base Casting Assembly A single-piece aluminium-alloy base casting provides a mounting sur- face for the drive mechanism and PCB.
The base casting also acts as the flange for the DC motor assembly. To provide a contamination-free environment for the HDA, a gasket provides a seal between the base casting and the metal cover that enclose the drive mechanism. The heads fly very close to the media surface. Therefore, it is essential that the air circulating within the drive be kept free of particles.
Quantum assembles the drive in a Class, purified air environment, then seals the drive with a metal cover. When the drive is in use, the rotation of the disk forces the air inside of the drive through an internal 0. DC Motor Assembly Integral with the base casting, the DC motor assembly is a fixed- shaft, brushless DC spindle motor that drives the counter-clockwise rotation of the disks. Electrical Characteristics All signals are transistor-transistor logic TTL compatible - with logic 1 greater than 2.
According to my memories, these boards can be swapped without other actions. Drive should be working with the new pcb at once. However, it probably does not spin up without connecting the preamp cable. Switch to mobile style.
Page 1 of 1. Previous topic Next topic. Move broken part from good board. This drive has terminal. There is no external rom chip.
0コメント