Это - достаточно беспорядочный архив сообщений конференций сети fidonet, которые на момент их прочтения мной
показались полезными или интересными. Многие устарели, многие узкоспецифичны и малоинтересны, но может оказаться и что-то новое...
- __techs (2:5015/42) ----------------------------------------------- __techs - Msg : 58 of 1000 Scn From : Sergey Kutikin 2:5020/324.16 09 Jul 96 01:07:56 To : Dmitry Tomachik 10 Jul 96 00:06:06 Subj : Simm 72Pin. Обобщенная информация. ------------------------------------------------------------------------------- @AREA:SU.HARDW.PC.MOTHERBOARD Пpивет ! Sun 07 Jul 1996 Dmitry Tomachik wrote in a message to All: >Кто внесет ясность по поводу PD1....PD4? JEDEC standard pin-out of the 72-pin module: PIN x36 x40 Description ------------------------------------------------------- 1 GND GND Ground 2 DQ0 DQ0 Data I/O 3 DQ18 DQ1 Data I/O 4 DQ1 DQ2 Data I/O 5 DQ19 DQ3 Data I/O 6 DQ2 DQ4 Data I/O 7 DQ20 DQ5 Data I/O 8 DQ3 DQ6 Data I/O 9 DQ21 DQ7 Data I/O 10 +Vcc +Vcc +5V 11 NC NC No Connection 12 A0 A0 Multiplexed Address bit 0 13 A1 A1 --------//--------- bit 1 14 A2 A2 --------//--------- bit 2 15 A3 A3 --------//--------- bit 3 16 A4 A4 --------//--------- bit 4 17 A5 A5 --------//--------- bit 5 18 A6 A6 --------//--------- bit 6 19 A10 x36: Multiplexed Address bit 10 -OE x40: Output Enable 20 DQ4 DQ8 Data I/O 21 DQ22 DQ9 Data I/O 22 DQ5 DQ10 Data I/O 23 DQ23 DQ11 Data I/O 24 DQ6 DQ12 Data I/O 25 DQ24 DQ13 Data I/O 26 DQ7 DQ14 Data I/O 27 DQ25 DQ15 Data I/O 28 A7 A7 Multiplexed Address bit 7 29 NC x36: No Connection DQ16 x40: Data I/O 30 +Vcc +Vcc +5V 31 A8 A8 Multiplexed Address bit 8 32 A9 A9 ---------//-------- bit 9 33 -RAS3 x36: Row Address Strobe 3 NC x40: No Connection 34 -RAS2 x36: Row Address Strobe 2 NC x40: No Connection 35 DQ26 DQ17 Data I/O 36 DQ8 DQ18 Data I/O 37 DQ17 DQ19 Data I/O 38 DQ35 DQ20 Data I/O 39 GND GND Ground 40 -CAS0 -CAS0 Column Address Strobe 0 41 -CAS2 x36: Column Address Strobe 2 A10 x40: Multiplexed Address bit 10 42 -CAS3 x36: Column Address Strobe 3 A11 x40: Multiplexed Address bit 11 43 -CAS1 -CAS1 Column Address Strobe 1 44 -RAS0 -RAS0 Row Address Strobe 0 45 -RAS1 -RAS1 Row Address Strobe 1 46 NC x36: No Connection DQ21 x40: Data I/O 47 -W -W Write Command 48 NC x36: No Connection GND x40: Ground 49 DQ9 DQ22 Data I/O 50 DQ27 DQ23 Data I/O 51 DQ10 DQ24 Data I/O 52 DQ28 DQ25 Data I/O 53 DQ11 DQ26 Data I/O 54 DQ29 DQ27 Data I/O 55 DQ12 DQ28 Data I/O 56 DQ30 DQ29 Data I/O 57 DQ13 DQ30 Data I/O 58 DQ31 DQ31 Data I/O 59 +Vcc +Vcc +5V 60 DQ32 DQ32 Data I/O 61 DQ14 DQ33 Data I/O 62 DQ33 DQ34 Data I/O 63 DQ15 DQ35 Data I/O 64 DQ34 DQ36 Data I/O 65 DQ16 DQ37 Data I/O 66 NC x36: No Connection DQ38 x40: Data I/O 67 PRD1 PRD1 Presence Detect 1 68 PRD2 PRD2 ------//------- 2 69 PRD3 PRD3 ------//------- 3 70 PRD4 PRD4 ------//------- 4 71 NC x36: No Connection DQ39 x40: Data I/O 72 GND GND Ground ------------------------------------------------------------------ The PS/2 modules have 4 special lines which are used for automatic presence detection of module.Those lines are called PRD1,PRD2,PRD3, and PRD4(pin numbers 67,68,69.and 70 respectively).Some of them are shorted to ground (Vss) in accordance with particular code.The code provides information about the module size and its speed.The IBM PS/2 computer cannot work with a module that does not carry the right code on its presence detection lines. -------------------------------------------------------------------- Best regards,Sergey --- GEcho 1.11+ * Origin: Net v zhizni schastya... (2:5020/324.16)
