Xt8086 alpha
About the Xt8086 alpha PCB
Xt8086 alpha is an open source PCB design by rh1tech, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 99.9 × 78 mm, with 80 components from 53 distinct parts.
Other key parts include the SN74LS04N, SN74LS74ANE4, 74HC4052D,653, 8086_Min_Mode and Pimoroni PGA2350. By type, the board carries 28 resistors, 16 capacitors, 13 connectors, 8 ICs, 5 switches and 3 diodes.
It belongs with the retro computing designs in this gallery.
From the project
RP2350 Based Hardware Emulation Platform
FRANK is a hardware emulation platform built around the Raspberry Pi RP2350 (Pico 2 modules and RP2350A QFN). RP2040 / Pico still works in FRANK's socket, but in practice only a handful of firmware (mainly the older ZX Spectrum cores) still targets RP2040. Everything modern (IBM PC, NES, SNES, Genesis, the DOOM / id Tech 1 ports, FRANK OS, and so on) is RP2350-only.
Main components on the Xt8086 alpha
Xt8086 alpha bill of materials (BOM)
80 components, 53 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | SN74LS04N SN74LS04 | DIP-14_W7.62mm | U1 |
| 1 | SN74LS74ANE4 SN74LS74 | DIP-14_W7.62mm | U2 |
| 1 | 74HC4052D,653 74HC4052D | 74HC4052N | U3 |
| 1 | 8086_Min_Mode | DIP-40_W15.24mm | U4 |
| 1 | Pimoroni PGA2350 | PGA2350 | U5 |
| 1 | MP1584EN-LF-Z | SOIC-9_P1.27mm | U6 |
| 2 | USBLC6-2SC6 | SOT-23-6 | U7, U8 |
| 1 | BC847 | SOT-23 | Q1 |
| 1 | 8086_Pins_Left | PinSocket_1x20_P2.54mm_Vertical | J1 |
| 1 | 8086_Pins_Right | PinSocket_1x20_P2.54mm_Vertical | J2 |
| 1 | PWR | PinHeader_1x03_P2.54mm_Vertical | J3 |
| 1 | UART | JST_SH_1x03_P1.00mm_Vertical | J4 |
| 1 | Debug | JST_SH_1x03_P1.00mm_Vertical | J5 |
| 1 | CMT-7525-80-SMT-TR Buzzer | Buzzer_12x8.5RM6.5 | J6 |
| 1 | 104031-0811 | MicroSD_SMD_Long | J7 |
| 1 | SJ1-3525N | AudioJack_3.5mm_SJ1-3525N | J8 |
| 1 | DC-005-5A-2.0 | BarrelJack_DC-005 | J9 |
| 1 | USB4215-03-A | USB_C_Receptacle | J10 |
| 1 | 676430910 | USB_A_Single | J11 |
| 1 | RCA-103 | BarrelJack_RCJ-012 | J12 |
Show 33 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | D-SUB 15 Female | DSUB-15_Female | J13 |
| 1 | Direct | SolderJumper-2_P1.3mm_Open_Pad1.0x1.5mm | JP1 |
| 1 | VGA VS | PinHeader_1x02_P2.54mm | JP2 |
| 1 | SK12D07VG3NS SS12D00 | Switch_Slide_SS12D00 | S1 |
| 1 | KMR221G LFS Boot | Button_SMD_3x4x2mm | S2 |
| 1 | KMR221G LFS Reset | Button_SMD_3x4x2mm | S3 |
| 1 | SW_DIP_x02 | SW_DIP_SPSTx02_Slide_9.78x7.26mm_W7.62mm_P2.54mm | S4 |
| 1 | SK12D07VG3NS | Switch_Slide_SK12D07VG3NS | S5 |
| 1 | Green | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | LD1 |
| 1 | Red | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | LD2 |
| 1 | 1N4148 | D_SOD-323 | D1 |
| 1 | 1N5822 | D_SMA | D2 |
| 1 | 1N5819WS | D_SOD-323 | D3 |
| 1 | 22uH | L_Radial_D9.5mm_P5.00mm_Fastron_07HVP | L1 |
| 1 | 330R | R_0805_2012Metric | L2 |
| 2 | 100u | CP_Radial_D6.3mm_P2.50mm | C1, C4 |
| 8 | 100n | C_0805_2012Metric | C2, C3, C5, C6, C9, C11, C12, C15 |
| 1 | 680u | C_Radial_D8.0mm_P3.50mm | C7 |
| 2 | 10u | C_0805_2012Metric | C8, C13 |
| 1 | 150pF | R_0805_2012Metric | C10 |
| 1 | 220u | C_Radial_D6.3mm_P2.50mm | C14 |
| 1 | 470pF | C_0805_2012Metric | C16 |
| 8 | 1K | R_0805_2012Metric | R1, R2, R3, R5, R11, R24, R25, R26 |
| 1 | 10K | R_0805_2012Metric | R4 |
| 5 | 22R | R_0805_2012Metric | R6, R16, R17, R18, R19 |
| 3 | 100K | R_0805_2012Metric | R7, R9, R10 |
| 1 | 24K | R_0805_2012Metric | R8 |
| 1 | 8.2K | R_0805_2012Metric | R12 |
| 1 | 43K | R_0805_2012Metric | R13 |
| 2 | 5.1K | R_0805_2012Metric | R14, R15 |
| 3 | 330R | R_0805_2012Metric | R20, R21, R22 |
| 1 | 75R | R_0805_2012Metric | R23 |
| 2 | 100R | R_0805_2012Metric | R27, R28 |
Xt8086 alpha design files
The KiCad project lives in the rh1tech/frank repository on GitHub; these links point at the commit this page was built from.
Xt8086 alpha: common questions
How big is the Xt8086 alpha PCB?
The Xt8086 alpha measures 99.9 × 78 mm, has 2 copper layers and is 1 mm thick.
How many components are on the Xt8086 alpha?
80 components, from 53 distinct parts. The full bill of materials is listed on this page.
Where can I download the Xt8086 alpha design files?
From the rh1tech/frank repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Xt8086 alpha design in my own project?
Yes, under the terms of its GPL-3.0 license, which rh1tech chose for the repository.
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