ISA65816a
About the ISA65816a PCB
ISA65816a is an open source PCB design by robfinch, published on GitHub. It is a 4-layer board measuring 223.3 × 120.1 mm, with 69 components from 39 distinct parts.
Other key parts include the 74LS240_Split, 74LVC00, 74LVC245, 74LVC573 and W65C816SP. By type, the board carries 22 ICs, 22 capacitors, 18 resistors, 3 connectors, 2 jumpers and 1 crystal.
From the project
Cores ===== RTF's Cores Use at your own risk. Welcome to my galaxy of cores. Contained in the directories are IP cores, source code for digital circuits. Also included are documentation, test benches, and software samples.
Main components on the ISA65816a
ISA65816a bill of materials (BOM)
69 components, 39 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74LS240_Split | DIP-20_W7.62mm_Socket | U1 |
| 1 | 74LVC00 | DIP-14_W7.62mm_Socket | U2 |
| 6 | 74LVC245 | DIP-20_W7.62mm_Socket | U3, U4, U6, U8, U9, U10 |
| 1 | 74LVC573 | DIP-20_W7.62mm_Socket | U7 |
| 1 | W65C816SP | DIP-40_W15.24mm_Socket | U11 |
| 3 | CModA7 | DIP-48_W15.24mm_Socket | U12, U13, U16 |
| 1 | 74LVC163 | DIP-16_W7.62mm_Socket | U14 |
| 1 | 74LVC74 | DIP-14_W7.62mm_Socket | U15 |
| 1 | VDIP2-32 | DIP-32_W15.24mm_Socket | U17 |
| 1 | ICS525R-02 | SSOP-28_3.9x9.9mm_P0.635mm | U18 |
| 1 | LM741 | DIP-8_W7.62mm_Socket | U19 |
| 1 | LM386 | DIP-8_W7.62mm_Socket | U20 |
| 2 | DS1818 | TO-92 | U21, U22 |
| 1 | AMS1117-3.3 | SOT-223-3_TabPin2 | U50 |
| 1 | 14.31818 MHz | Oscillator_DIP-14 | X1 |
| 1 | Bus_ISA_16bit | BUS_AT | J1 |
| 1 | Audio In | Jack_3.5mm_CUI_SJ1-3533NG_Horizontal | J2 |
| 1 | AudioJack2 | Jack_3.5mm_CUI_SJ1-3533NG_Horizontal | J3 |
| 1 | Jumper_2_Open | PinHeader_1x02_P2.54mm_Vertical | JP1 |
| 1 | Jumper_2_Bridged | PinHeader_1x02_P2.54mm_Vertical | JP2 |
Show 19 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | DIODE | D_A-405_P10.16mm_Horizontal | D1 |
| 12 | 0.1u | C_Disc_D3.8mm_W2.6mm_P2.50mm | C1, C3, C4, C6, C7, C8, C9, C10 +4 |
| 2 | 0.01u | C_Disc_D3.8mm_W2.6mm_P2.50mm | C18A1, C18B1 |
| 1 | 100u | CP_Radial_D5.0mm_P2.50mm | C30 |
| 1 | 0.047u | C_Disc_D3.8mm_W2.6mm_P2.50mm | C32 |
| 1 | 100u | CP_Radial_D8.0mm_P3.80mm | C33 |
| 3 | 10u | CP_Radial_D5.0mm_P2.50mm | C34, C50, C51 |
| 1 | 220u | CP_Radial_D8.0mm_P3.80mm | C35 |
| 1 | 0.047u | C_Disc_D5.0mm_W2.5mm_P5.00mm | C36 |
| 1 | 2k2 | R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R1 |
| 5 | 10k | R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R2, R3, R5, R11, R52 |
| 1 | 220k | R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R4 |
| 3 | 3k3 | R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R6, R7, R12 |
| 2 | 5k1 | R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R8, R9 |
| 1 | 10 | R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R10 |
| 1 | 2.2k | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R51 |
| 2 | 3k3 | R_Array_SIP9 | RN1, RN3 |
| 1 | 3k3 | R_Array_SIP5 | RN2 |
| 1 | 10k | R_Array_SIP9 | RN4 |
ISA65816a design files
The KiCad project lives in the robfinch/Cores repository on GitHub; these links point at the commit this page was built from.
ISA65816a: common questions
How big is the ISA65816a PCB?
The ISA65816a measures 223.3 × 120.1 mm, has 4 copper layers and is 3.66 mm thick.
How many components are on the ISA65816a?
69 components, from 39 distinct parts. The full bill of materials is listed on this page.
Where can I download the ISA65816a design files?
From the robfinch/Cores repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the ISA65816a design in my own project?
The repository has no license, so all rights stay with robfinch. Use it as a reference, and ask the author before reusing the design.
