RC6502 TIA NTSC
About the RC6502 TIA NTSC PCB
RC6502 TIA NTSC is an open source PCB design by tebl, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 99.1 × 69.2 mm, with 45 components from 31 distinct parts.
Other key parts include the TIA_NTSC, 74HCT138 and VDU_Port. By type, the board carries 18 resistors, 12 capacitors, 5 connectors, 5 jumpers, 3 ICs and 1 crystal.
It belongs with the retro computing designs in this gallery.
From the project
An expandable SBC-version of the Apple 1 computer, easy to get started with and lot of cool stuff that can be added to it!
Since building and spending time with the excellent RC2014 computer kit, I wanted to build another one from scratch while learning even more about them along the way. Combine that with the love of old machines I'll never be able to own, and the missing knowledge to actually do that I instead started looking for books on how things work on a more basic level.
Main components on the RC6502 TIA NTSC
RC6502 TIA NTSC bill of materials (BOM)
45 components, 31 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TIA_NTSC | DIP-40_W15.24mm_Socket | U1 |
| 1 | 74HCT138 | DIP-16_W7.62mm_Socket | U2 |
| 1 | VDU_Port | Amplifier | U3 |
| 1 | 3.579545 MHz | Oscillator_DIP-14 | X1 |
| 1 | Audio | rca_yellow | J1 |
| 1 | VDU_BASE | Pin_Header_Straight_2x07_Pitch2.54mm | J2 |
| 1 | Analog | Pin_Header_Straight_1x04_Pitch2.54mm | J3 |
| 1 | Composite | rca_yellow | J8 |
| 1 | RC6502_Backplane_Extra | Pin_Header_Angled_1x39_Pitch2.54mm | J9 |
| 1 | CADJ | Pin_Header_Straight_1x02_Pitch2.54mm | JP1 |
| 1 | CS0_SEL | Pin_Header_Straight_1x03_Pitch2.54mm | JP2 |
| 1 | CS3_SEL | Pin_Header_Straight_1x03_Pitch2.54mm | JP3 |
| 1 | T1_EN | Pin_Header_Straight_1x02_Pitch2.54mm | JP4 |
| 1 | T0_EN | Pin_Header_Straight_1x02_Pitch2.54mm | JP5 |
| 1 | 500k | Potentiometer_Trimmer_Bourns_3296W | RV1 |
| 3 | 100nF | C_Disc_D4.7mm_W2.5mm_P5.00mm | C1, C2, C12 |
| 4 | 68nF | C_Disc_D4.7mm_W2.5mm_P5.00mm | C3, C4, C5, C6 |
| 1 | 22pF | C_Disc_D4.7mm_W2.5mm_P5.00mm | C7 |
| 1 | 47pF | C_Disc_D4.7mm_W2.5mm_P5.00mm | C8 |
| 2 | 470pF | C_Disc_D4.7mm_W2.5mm_P5.00mm | C9, C10 |
Show 11 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 820pF | C_Disc_D4.7mm_W2.5mm_P5.00mm | C11 |
| 2 | 27k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R5 |
| 4 | 3K3 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2, R4, R6, R8 |
| 1 | 56k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3 |
| 1 | 110k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R7 |
| 3 | 1k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R9, R11, R12 |
| 1 | 6k8 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R10 |
| 1 | 18k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R13 |
| 1 | 9k1 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R14 |
| 2 | 220 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R15, R16 |
| 2 | 10k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R17, R18 |
RC6502 TIA NTSC design files
The KiCad project lives in the tebl/RC6502-Apple-1-Replica repository on GitHub; these links point at the commit this page was built from.
RC6502 TIA NTSC: common questions
How big is the RC6502 TIA NTSC PCB?
The RC6502 TIA NTSC measures 99.1 × 69.2 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the RC6502 TIA NTSC?
45 components, from 31 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the RC6502 TIA NTSC design files?
From the tebl/RC6502-Apple-1-Replica repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the RC6502 TIA NTSC design in my own project?
Yes, under the terms of its GPL-3.0 license, which tebl chose for the repository.
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