my_pcxt
ppsilv
A try to make a pc-xt boar with SRAM
Components (55)
| Reference | Value | Description |
|---|---|---|
| Q1-Q3 | 2N3904 | |
| U1 | 74HCT00 | |
| U2 | 7805 | |
| U3 | 8284 | |
| U4 | 8288 | |
| U5 | 8088 | |
| U6 | 74HCT245 | |
| U7 | 8259A | |
| U8-U10 | 74HCT373 | |
| U11 | AS6C4008 | |
| U12 | SST39SF040 | |
| U13 | 74HCT138 | |
| U14 | 82C55A | |
| U15 | PIC18(L)F4550-I/P or PIC18(L)F4553-I/P | |
| C1 | 1000 uF | |
| C2 | 330nF | |
| C3-C11,C13-C16,C20,C21,C23,C24 | 100nF | |
| C12 | 4.7uF | |
| C17 | 100uF | |
| C18,C19 | 22pF | |
| C22 | 220nF | |
| CON1 | BARREL_JACK | |
| D1 | 1N4002 | |
| D2 | 5.6 V | |
| D3 | D | |
| D4 | Power | |
| D5,D9,D10 | 1N4148 | |
| D6 | LED_RED | |
| D7 | LED_YELLOW | |
| D8 | LED_GREEN | |
| D11 | BT151-500RT.127 | |
| F1 | 30R160U | |
| H1-H4 | MountingHole_Pad | |
| JP1 | ROM type sel | |
| JP2 | Flash Write Protect | |
| P1,P5 | Conn_01x02_Male | |
| P2 | NMI | |
| P3 | LA1034 Logicport Connection | |
| P4 | Conn_01x05_Female | |
| P6,P9 | CONN_01X10 | |
| P7 | PIC ISP | |
| P8 | USB_B | |
| P10 | Conn_01x10 | |
| P11 | ~{TEST} | |
| R1 | 270 | |
| R2,R6-R8 | 10K | |
| R3,R4 | 510 | |
| R5 | 4.7K | |
| R9-R11 | 100 | |
| R12 | 47K | |
| R13 | 1k | |
| SW1 | RESET_8088 | |
| SW2 | RESET_PIC | |
| Y1 | 6-30 MHz | |
| Y2 | 20.000 MHz |