Appendix B: System Setup Procedure ......... 5 System CMOS Setup GSI Model 4C Auto-Install & Auto-Prep — for Hard Drives When to Refuse Auto-Prep & Use DOS’ FDISK Instead Shadowing the GSI BIOS Area of Memory — for Speed Appendix C: System and Software Usage Guidelines ....
(FDISK & FORMAT) new drives for DOS. The Model 4C accelerates IDE hard drive data transfer rates, on most drives, by making best use of drive performance features. The GSI Model 4C is an IDE-only controller and does not include any floppy drive support.
Model 4C’s. A shadowed BIOS is executed from a hi-speed RAM copy and may enhance performance. Shadowing of the GSI BIOS should be ON for normal operation, but OFF when first installing the GSI board or whenever reconfiguring hard drive setup.
This aspect of compatibility is not under the control of GSI and does not arise from any design detail of the GSI Model 4C. Therefore, for Master/Slave problems, contact the drive manufacturers’ Technical Support Departments for help.
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Gently but firmly press the GSI Model 4C into the slot, securing it in place with the retaining screw. Be careful to confirm that the Model 4C is fully inserted into its slot.
Selecting BIOS shadowing causes the BIOS programming to be copied to RAM memory and executed from the high-speed RAM copy. Shadowing of the GSI BIOS should be OFF during GSI Auto-Install , but should be ON for normal operation. See Section B.3 for more information.
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Note: In a rare case, you may experience PC system errors which occur when the GSI BIOS is shadowed, but not when the GSI BIOS is not shadowed. If so, and if you are using a memory manager (see C.1), try expanding the exclude region described above — so that it includes the entire shadowing address range, as shown in your System CMOS Setup screens.
“Device=C : \QEMM\QEMM.SYS exclude=DC00-DDFF” (For 386MAX/Netroom, do similarly) if your Model 4C BIOS is at DC00. (Confirm your GSI BIOS address from the GSI Bootup Banner.) Note: Memory managers cause 386, 486, & 586 (aka Pentium ) PCs to run in Virtual Mode.
D.1.2 IDE Drive Ribbon Cables Model 4Cs shipped in GSI VAR Packs (Part #1533-4C-Vx-x) include four identical 40-conductor PC-standard IDE ribbon cables, Part #1548-02-01-9. Each cable can connect two IDE hard drives (or IDE hard drive plus tape drive), one at the End Position and one at the Center. Note that the IDE (CAM-ATA) Interface Specification recommends a maximum cable length of 18".
1024 cylinders have caused integration headaches because system BIOS calls do not provide for cylinder counts greater than 1024. When the GSI Model 4C is connected to such a drive, it automatically uses a special setup strategy to handle this problem.
D.4 VERY LARGE IDE HARD DRIVES — FROM 504MB TO 8.4-GIGABYTE CAPACITY Some IDE HDs have very large capacities, exceeding the DOS limit of 504MB. The GSI Model 4C provides BIOS-level support for IDE HDs up to 8.4 GB’s in capacity! The very large HD is treated as one drive volume and will be assigned one drive letter by DOS.
BIOS co-residing in the system with them. If you do not see a GSI Banner at boot time, and if you have situated the GSI BIOS at a lower address than the SCSI/ESDI BIOS, try putting the GSI BIOS at a higher address —...
Model 4C board. In practice, this would ordinarily be a SCSI- interface drive. If you wish to operate in this mode, try setting up your SCSI controller board’s jumpers (or switches) to place the SCSI BIOS Start Address at a lower address than the GSI Model 4C BIOS.
1) in bulk (board and manual only) — GSI Part # 1533-4C-xx-x, where xx-x is the Model 4C revision number, and 2) in VAR packs (board, manual, & GSI IDE 2-drive cable packaged up in a white GSI box) — GSI Part # 1533-4C-Vx-x F.2 PRODUCT SPECIFICATIONS...
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Note: DMA (DRQ & DACK) should be left DISABLED, unless you are using a driver which you know is prepared to use DMA. There is no DMA capability provided for Channel 4. F.3.4 Jumper Block J10: GSI BIOS Address J10 - R/S GSI BIOS Address Range: J10- BIOS Address ON / ON...
APPENDIX G -- BASIC TROUBLESHOOTING -- SYMPTOMS AND CURES G.1 GSI Banner is Not Seen On-Screen During Bootup: Is there a second controller BIOS at the same address as the GSI BIOS? See Section A.2.1 The System BIOS, if non-AMI, may not find GSI BIOS if at E000 address.
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Temporary Fix: Use another controller to prepare proper partition. Permanent Fix: HD-firmware update. (-G) -V = Check with your vendor that you have the latest GSI BIOS version for your Model 4C card. -G = Ask vendor's Tech Support Dept. to contact GSI to discuss the problem directly with GSI.
INSTALLATION NOTES During installation, you should take down the following information. This information will be useful should you need to contact technical support. GSI’s Authorized Distributors can provide you technical support, or you can contact: GSI Technical Support PHONE: (714) 261-9744...
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MFM, RLL, SCSI, ESDI and other IDE hard drives. Also supports duplexing and mirroring of IDE hard drives in Novell networks. The GSI Model 21 -- Enhanced IDE, Floppy & Tape for ISA Systems. A 16-bit Combo IDE / Floppy & Tape accelerator board. Increases IDE throughput up to 80%.
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