home *** CD-ROM | disk | FTP | other *** search
-
- WE ARE IN THE PROCESS OF CONFIGURING A USER GUIDE FOR THE WD7000 PRODUCTS FOR
- USE ON THE BULLETIN BOARD. HOWEVER, IN THE INTERIM, THE FOLLOWING JUMPER
- DEFINITIONS MAY BE HELPFUL.
-
-
- WD7000-ASC and WD7000-FASST
- Jumper Settings
-
- **************************************************************************
- Configuration Jumper Options
- **************************************************************************
-
- The following tables illustrate the various jumper options of the WD7000-ASC
- SCSI host adapter. A "1" indicates that the jumper is installed; a "0"
- indicates no jumper installed.
-
- *PLEASE NOTE THAT THE DEFAULT SETTINGS SHOWN ARE FOR THE WD7000-ASC AND ARE NOT
- NECESSARILY THE SAME ON THE WD7000-FASST.
-
- **************************************************************************
- "W3" - ASC I/O Address Space
- **************************************************************************
-
- These jumpers are used to change the ASC I/O address space when desired.
- Address lines SA7-3 are selectable, SA9-8 are fixed at a high level, and all
- other lines are just driven by the host bus as required. The ASC is currently
- selected to decode 320-323 (SA9-SA0), the LSB 3 bits are used to select onboard
-
- ASC registers; SA9-SA8 are fixed at +5V or a logic "1" level.
-
- * Default Configuration: W-3
- SA3 1 │ 0---0 │ 2
- SA4 3 │ 0---0 │ 4
- SA5 5 │ 0 0 │ 6
- SA6 7 │ 0---0 │ 8
- SA7 9 │ 0---0 │ 10
-
- SA7 SA6 SA5 SA4 SA3 I/O Address
-
- 0 0 0 0 0 3F8H
- 0 0 0 0 1 3F0H
- 0 0 0 1 0 3E8H
- 0 0 0 1 1 3E0H
- 0 0 1 0 0 3D8H
- 0 0 1 0 1 3D0H
- 0 0 1 1 0 3C8H
- 0 0 1 1 1 3C0H
- 0 1 0 0 0 3B8H
- 0 1 0 0 1 3B0H
- 0 1 0 1 0 3A8H
- 0 1 0 1 1 3A0H
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
- SA7 SA6 SA5 SA4 SA3 I/O Address
- 0 1 1 0 0 398H
- 0 1 1 0 1 390H
- 0 1 1 1 0 388H
- 0 1 1 1 1 380H
- 1 0 0 0 0 378H
- 1 0 0 0 1 370H
- 1 0 0 1 0 368H
- 1 0 0 1 1 360H
- 1 0 1 0 0 358H
- 1 0 1 0 1 350H
- 1 0 1 1 0 348H
- 1 0 1 1 1 340H
- 1 1 0 0 0 338H
- 1 1 0 0 1 330H
- 1 1 0 1 0 328H
- 1 1 0 1 1 320H*
- 1 1 1 0 0 318H
- 1 1 1 0 1 310H
- 1 1 1 1 0 308H
- 1 1 1 1 1 300H
-
- ASC I/O ADDRESS SPACE JUMPERS
-
- **************************************************************************
- "W4" BIOS ROM Address Space
- **************************************************************************
-
- These jumpers can be used to change the BIOS ROM address space when desired.
- Address lines SA16-13 are selectable, SA19-18 are fixed at a high level, SA17
- is fixed at a low level and all other lines are just driven by the host bus as
- required to access an 8KX8 ROM. The ASC is currently selected to decode CO
- (SA19-SA13).
-
- Address Select (W4)
-
- SA19 fixed at +5 V
- SA18 fixed at +5 V
- SA17 fixed at 0 V
- SA16 7 o---o 8
- SA15 5 o---o 6
- SA14 3 o---o 4
- SA13 1 o---o 2
- GND │ │ 4.7K
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
- SA16 SA15 SA14 SA13 BIOS ADDRESS
- 0 0 0 0 DE00H
- 0 0 0 1 DC00H
- 0 0 1 0 DA00H
- 0 0 1 1 D800H
- 0 1 0 0 D600H
- 0 1 0 1 D400H
- 0 1 1 0 D200H
- 0 1 1 1 D000H
- 1 0 0 0 CE00H
- 1 0 0 1 CC00H
- 1 0 1 0 CA00H
- 1 0 1 1 C800H
- 1 1 0 0 C600H
- 1 1 0 1 C400H
- 1 1 1 0 C200H
- 1 1 1 1 C000H *
-
- BIOS ROM ADDRESS SPACE JUMPERS
-
- **************************************************************************
- "W2" DRQ/DACK Jumpers
- **************************************************************************
-
- ASC uses DMA channels 5, 6, and 7 with channel 6 being the standard
- configuration. No other configurations are permitted since a 16 bit host bus
- is assumed. Also note that the host must turn on the ASC DMA enable first and
- then enable the system DMA channel. This is required since the DMA line is a
- tri-state control signal. If this is not done, spurious DMA signals might
- occur if the host system DMA is enabled first since the ASC will tri-state this
-
- signal on power up. Any other I/O card that shares the same DMA channel can
- also be used to drive this signal to avoid spurious signals.
-
- (W2)
- DRQ7 1 │ o o │ 2
- * DRQ6 3 │ o---o │ 4
- DRQ5 5 │ o o │ 6
- DACK7- 7 │ o o │ 8
- * DACK6- 9 │ o---o │ 10
- DACK5- 11 │ o o │ 12
-
- DMA CHANNEL CONFIGURATION JUMPERS
-
- **************************************************************************
- "W1", "W2" IRQ Jumpers
- **************************************************************************
-
- The ASC supports IRQ channels 3-5, 7, 9-12, and 14-15 with channel 3 being the
- standard configuration. Since this signal is tri-state driven, the same
- precaution as the DMA channel enable applies here as well.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
- (W1) & (W2)
- * IRQ3 1 │ o---o │ 2 IRQ15 13 │ o o │ 14
- IRQ4 3 │ o o │ 4 IRQ14 15 │ o o │ 16
- IRQ5 5 │ o o │ 6 IRQ12 17 │ o o │ 18
- IRQ7 7 │ o o │ 8 IRQ11 19 │ o o │ 20
- IRQ9 9 │ o o │ 10 IRQ10 21 │ o o │ 22
-
- IRQ CHANNEL CONFIGURATION JUMPERS
-
- **************************************************************************
- "W5" Terminator Power
- **************************************************************************
-
- The SCSI bus devices are connected together using a daisy chain cable. This
- cable should have terminating resistors at each end of the cable. These
- resistors are designated Z1 and Z2 on the ASC. All SCSI devices between the
- two ends of the cable should not have the terminating resistor packs but one of
-
- them must supply power to these packs via a jumper similar to W5 as shown
- below:
-
- (W5)
- TRMPWR 1 │ o---o │ 2
-
-
- **************************************************************************
- "W7" Dual Speed Spindle
- **************************************************************************
-
- When the jumper is installed, it enables a dual speed, 360 RPM, floppy
- spindle. Without the jumper, it disables the dual speed spindle for a single
- speed, 300 RPM, floppy.
-
- (W7) = enable dual speed
- DRV 1 │ o o │ 2
-
- **************************************************************************
- "W8" Floppy Write Precomp Select
- **************************************************************************
-
- With the jumper installed, the write precomp value set is 187 NS (for a 1.2 MB
- floppy) and with the jumper removed, the write precomp value selected is 125 NS
-
- (usually for a 360 KB floppy).
-
- (W8) = 187 NS precomp (1.2MB), else
- = 125 NS precomp (360KB)
-
- PRECOMP 1 │ o o │ 2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
- **************************************************************************
- "W6" & "W9" Floppy Control
- **************************************************************************
-
- W6 1 │ o---o │ 2 W6 W9 DESCRIPTION
- 0 0 Onboard Floppy Enabled
- W9 1 │ o---o │ 2 with NO Hard or Combo Card
- 0 1 Onboard Floppy Enabled
- with Hard Card only
- 1 X Onboard Floppy Disabled *
-
- FLOPPY CONTROL JUMPERS
-
-
-