sap-plus
TomNisbet
Simple As Possible (SAP) 8-bit computer with a modular PCB design
Components (32)
| Reference | Value | Description |
|---|---|---|
| U1,U4 | 74LS245 | Octal BUS Transceivers, 3-State outputs |
| U2,U3 | 74LS161 | |
| U5,U6 | 74LS193 | |
| U7 | 74LS00 | |
| U8 | 74LS32 | Quad 2-input OR |
| C1-C8 | 0.1uF | |
| D1 | P0 | |
| D2 | P1 | |
| D3 | P2 | |
| D4 | P3 | |
| D5 | P4 | |
| D6 | P5 | |
| D7 | P6 | |
| D8 | P7 | |
| D9 | S0 | |
| D10 | S1 | |
| D11 | S2 | |
| D12 | S3 | |
| D13 | S4 | |
| D14 | S5 | |
| D15 | S6 | |
| D16 | S7 | |
| D17,D19 | WRITE | |
| D18,D20 | READ | |
| D21 | DN | |
| D22 | UP | |
| D23 | PI | |
| J1,J2 | Bus | |
| R1 | R-BLU | |
| R17,R19,RN2 | R-RED | 8 resistor network, star topology, bussed resistors, small US symbol |
| R18,R20,RN1 | R-GRN | 8 resistor network, star topology, bussed resistors, small US symbol |
| R21,R22 | R-ORG |