Siemens PC 870 Operations Instructions Page 115

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Detailed descriptions
15.2 Bus board
Panel PC 870 V2, Computer Unit
Operating Instructions, Edition 03/2004, CD Documentation and Drivers
15-19
ISA slot pin assignment
Pin No. Designation Type* Pin No. Designation Type
A1 IOCHCK# I B1 0V GND
A2 SD 07 I/O B2 RESET DRV O
A3 SD 06 I/O B3 + 5V VCC
A4 SD 05 I/O B4 IRQ 9 I
A5 SD 04 I/O B5 - 5V VCC
A6 SD 03 I/O B6 Reserved I
A7 SD 02 I/O B7 - 12V VCC
A8 SD 01 I/O B8 Reserved I
A9 SD 00 I/O B9 + 12V VCC
A10 IOCHRDY I B10 0V GND
A11 AEN O B11 SMEMW# O
A12 SA 19 I/O B12 SMEMR# O
A13 SA 18 I/O B13 IOW# I/O
A14 SA 17 I/O B14 IOR# I/O
A15 SA 16 I/O B15 DACK3# O
A16 SA 15 I/O B16 DRQ 3 I
A17 SA 14 I/O B17 DACK1# O
A18 SA 13 I/O B18 DRQ 1 I
A19 SA 12 I/O B19 REFRESH# I/O
A20 SA 11 I/O B20 CLK O
A21 SA 10 I/O B21 IRQ 7 I
A22 SA 09 I/O B22 Reserved I
A23 SA 08 I/O B23 IRQ 5 I
A24 SA 07 I/O B24 IRQ 4 I
A25 SA 06 I/O B25 IRQ 3 I
A26 SA 05 I/O B26 Reserved O
A27 SA 04 I/O B27 TC O
A28 SA 03 I/O B28 BALE O
A29 SA 02 I/O B29 + 5V VCC
A30 SA 01 I/O B30 OSC O
A31 SA 00 I/O B31 0 V GND
*) I/O determines the direction of the signals for the CPU module.
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