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- -- card: 4088 from stack: in
- -- bmap block id: 0
- -- flags: 0000
- -- background id: 2723
- -- name:
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- -- part contents for background part 17
- ----- text -----
- •512/2048 Memory expansion board (307 & 308) START Multiproduct Boards 33
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- -- part contents for background part 18
- ----- text -----
- for 80286 based products except COMPAQ Portable III
- Jumpers Settings Address range*
- E1 to E2 E5 to E6 1 to 3 MB
- E1 to E2 E4 to E5 2.5 to 4.5 MB
- E2 to E3 E5 to E6 4.5 to 6.5 MB
- E2 to E3 E4 to E5 6.5 to 8.5 MB
- *Memory address range is dependent on system memory board configuration
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- •Async communication/clock board (16) for COMPAQ Portable, Plus, & Deskpro
- Jumper Pin 1 to pin 2 Pin 2 to pin 3
- J702* COM2 address COM1 address
- J703 IRQ3 IRQ4
- JUMPER STATUS
- J704 Jumper-enables 8th slot
- No jumper-disables 8th slot
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- -- part contents for background part 20
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- J705** Jumper-enables clock
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- -- part contents for background part 19
- ----- text -----
- No jumper-disables clock
- SHUNT STATUS
- U13 Pins 5 to 12, 6 to 11, 7 to 10, 8 to 9 connected Serial RS-232C operation
- Pins 1 to 16, 2 to 15, 3 to 14, 4 to 13 connected 20-mA current loop
- *Jumpers J702,J703 must be changed together **If no physical jumper, clock is enabled
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- •Async communications/parallel printer board (570) All Products
- 1 2 3 4 5 6 Function
- OFF Reserved
- ON Enable ansychronous
- OFF Disable asychronous interface
- ON ON Select printer interface LPT1
- OFF ON Select printer interface LPT2
- ON OFF Select printer interface LPT3
- OFF OFF Disable printer interface
- ON ON Select asynchronous interface COM1
- OFF ON Select asynchronous interface COM2