oldworld
demik
Development ressources for Old World Macintosh (68k and NuBus PPC) and a few related things…
Components (19)
| Reference | Value | Description |
|---|---|---|
| U1 | 344S1021-A | PIC, 65C02 based I/O microcontroller, IIfx, Quadra 900/950, Personal LaserWriter NT |
| U2 | CY62256-70PC | 256K (32K x 8) Static RAM, 70ns, DIP-28 |
| U3 | 27C256 | OTP EPROM 256 KiBit |
| U4 | Z8530 | SCC Serial Communication Controller, PLCC-44 |
| U5 | 7400 | quad 2-input NAND gate |
| U6 | 74LS244 | Octal Buffer and Line Driver With 3-State Output, active-low enables, non-inverting outputs |
| U8,U9 | SN75175DR | Quadruple Differential Line Receiver |
| C2,C4,C5,C10,C12 | 100nF | Unpolarized capacitor |
| C13 | 100uF | Polarized capacitor |
| J1 | Amphenol 61729 | USB Type B connector |
| J2 | IDC-20 | Generic connector, double row, 02x10, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/) |
| J3 | Mini-DIN-8 | 8-pin Mini-DIN connector |
| J4 | DB25_Socket | 25-pin D-SUB connector, socket (female) |
| R1 | 150Ω | Resistor |
| R2 | 1000Ω | Resistor |
| R3-R6 | 0Ω | Resistor |
| R9 | 3300Ω | Resistor |
| TP27-TP29,TP52,TP53 | TestPoint | test point |
| Y1 | 15.6672MHz | Crystal Clock Oscillator, DIP14-style metal package |