we816
danwerner21
The WE816 is a 16-bit 65816 based system with 512K of System RAM, 96K of System ROM, 32K of video RAM, a TMS9918 graphics processor and an AY-3-8910 Sound chip. The system runs a custom version of BASIC and supports commodore compatible IEC disk drives.
Components (63)
| Reference | Value | Description |
|---|---|---|
| Q1 | 2N3904 | |
| U1 | 74LS393 | |
| U2 | 7406 | |
| U3 | 74LS06N | |
| U4 | 74LS14 | |
| U5 | 74LS04 | |
| U6 | TMS9918 | |
| U7-U9 | 74LS574 | |
| U10 | RAM_32KO | |
| U11 | 74LS32 | |
| U12,U14 | GAL16V8 | |
| U13 | GAL20V8 | |
| U15 | 16550 | |
| U16 | DS1302 | |
| U17 | MAX232 | |
| U18,U19 | W65C22NxP | |
| U20,U22-U24,U31 | 74LS245 | |
| U21 | 74LS244 | |
| U25 | AY-3-8910 | |
| U26 | SRAM_512KO | |
| U27 | 658C16 | |
| U28 | 27C256 | |
| U29 | 27C512 | |
| U30 | 74LS373 | |
| BT1 | Battery_Cell | |
| C1-C33,C37,C49 | 0.1 µF | |
| C34,C35 | 33 pF | |
| C36,C48 | 22 µF | |
| C38 | 220 µF | |
| C39-C43 | 1.0µF | |
| C44,C45 | 270 pF | |
| C46,C47,C50 | 10 µF | |
| D1 | BICOLOR LED | |
| H1-H5 | MountingHole | |
| J1 | Conn_01x02_Male | |
| J2 | TTL Serial | |
| J3 | KEYBOARD | |
| J4 | IEC PORT | |
| J5 | CASELEDS | |
| J6 | INTERRUPT SELECT | |
| J7 | expansion port | |
| J8 | AudioJack3 | |
| J9,J10 | DB9_Male | |
| K1 | 1&2 FOR SMALL ROM, 2&3 FOR LARGE ROM | |
| K2 | USE FOR 512K SRAM OR 128K SRAM | |
| K3 | 1&2 FOR 27C256, 2&3 FOR 29C256 | |
| L1 | INDUCTOR (BEAD) | |
| P1 | SERIAL | |
| P2 | CHAN_MIX | |
| P3 | POWER | |
| P4 | RESET | |
| P5 | CLK_CPU | |
| R1 | 0Ω | |
| R2 | 470Ω | |
| R3,R4 | 75Ω | |
| R5-R10,R18,RR1 | 1KΩ | |
| R11-R14,R17 | 10KΩ | |
| R15 | 100Ω | |
| R16 | 10Ω | |
| RR2-RR4,RV1,RV2 | 4700Ω | |
| X1 | 10.7 MHz | |
| X2 | CXO_DIP8 | |
| X3 | CRYSTAL 32.768 KHz |