IPAD Model 2500 Original Hardware Details
The information on this page is for the IPAD Model 2500 manufactured by eSoft, Inc. only. It is presented here without warranty or guarantee for accuracy or completeness.
Two different motherboards were used in eSoft production. The motherboards required manual changes from the factory default settings as described below. All BIOS level power management features must be disabled.
Motherboard Type | Special Settings |
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Asus Main Board |
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Intel Rhinestone Main Board |
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Memory: The IPAD-OS versions provided by eSoft supported a maximum of 16 megabytes of 72 pin EDO dynamic RAM. Even though the motherboard hardware would physically accept more memory, only the first 16 megabytes would be used by the software. Early model 2500 units shipped with 4 megabytes of RAM installed. Later units shipped with 8 megabytes of RAM installed.
There were three different riser cards used to connect the interface cards to the motherboard.
- Found most often in the model 1200. Has three ISA (black) slots, one on the side near the power supply and the remaining two on the side away from the power supply. Some rare cards had both ISA and PCI (white) slots on the side near the power supply, but the model 1200 PNP software would not always detect a PCI network card connected this way.
- The most common riser for the model 2500. Had one PCI (white) on the side near the power supply and the remaining slots away from the power supply were ISA (black) slots.
- Identical to type 2 (above) with the addition of one more PCI (white) slot on the side away from the power supply. This allowed using two PCI network interface cards.
The physical location of the interface cards in risers with PCI slots is important.
- The LAN interface must be in the PCI (white) slot nearest the power supply.
- The PROVIDER interface (if PCI) must be in the PCI slot away from the power supply.
- All other interface options (ISA-PROVIDER, AUX) must be in the ISA slots away from the power supply. The traditional placement was to have the Provider interface in the top slot, and the AUX interface in the lower slot closer to the motherboard.
The hardware options for the feed (Provider) interface must be set to the following.
Feed Type | Make/Model | Interface | Memory IO Port | Hardware IRQ | Extra Settings | ||||||||||||||||||||||||||||
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Internal Modem | US Robotics/3COM Sportster Modem Part# 005687-03 |
ISA | 3e8 | 7 |
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Internal ISDN | US Robotics/3COM Courier I-Modem USA Part# 000698-13 Europe Part# ? |
ISA | 2e8 COM4 |
7 |
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Internal 56K Leased Line/V.35 | Digiboard Sync/570i-56 | ISA | 280
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10 |
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Ethernet Feed | Intel EtherExpress PRO/100b Intel Part: PCLA8560 |
ISA | 320 | 10 |
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Token Ring Feed | 3COM TokenLink Velocity #3C319 |
ISA | A24 | 10 | PNP=Disabled | ||||||||||||||||||||||||||||
Token Ring Feed | 3COM TokenLink Velocity #3C339 |
PCI | PROVIDER slot=PCI slot away from power supply | ||||||||||||||||||||||||||||||
Auxiliary Interfaces | |||||||||||||||||||||||||||||||||
RocketPort 6 Port Dial-up Expansion | RocketPort 485/ISA Part# 96550-3 |
ISA | 180 | 11 |
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Ethernet AUX | Intel EtherExpress PRO/10 Part# PCLA8220B |
ISA | 310 | 11 | PNP=Off | ||||||||||||||||||||||||||||
Token Ring AUX | 3COM TokenLink Velocity #3C319 |
ISA | A20 | 11 | PNP=Disabled |
Only one of any of the above feed (PROVIDER) interfaces may be installed in an IPAD model 2500 at a time. Installing more than one feed interface or a feed interface incorrectly configured may cause loss of data from the IPAD model 2500 performing a factory reset in an attempt to recover from the error. The best source for this hardware is the IPAD Owners Association that runs a list server populated by some of the most helpful and resourceful people in the industry.
BIOS Settings
This is an image of the BIOS setup for an IPAD model 2500 on an Intel Rhinestone motherboard. You should notice that this motherboard does not have any audio ability reflected in the BIOS, but some motherboards may show this option. If it does, just change the audio settings to Disabled and it will help to prevent address or IRQ conflicts.
First published 2006-12-31. The last major review or update of this information was on 2011-04-07. Your feedback using the form below helps us correct errors and omissions on this page.