DubaiXTClone
DubaiXTClone is an open source PCB design by spencer-uk: a 4-layer, 304.8 × 215.9 mm board with 144 components (83 distinct parts). It is built around the 8284A, LS245, 8088, 8087 and more.
PC XT Clone - 8Mhz created in Dubai - IBM5160/5150 PC XT Compatible Computer Motherboard
This board was born in Dubai in 2026, making it almost certainly the first Turbo PC/XT Clone Motherboard ever designed in the UAE. It was not built to tick a box or replicate something that already existed. It was built because the board that Felipe Spencer Picada wanted — minimal, clean, modern, with everything a serious PC/XT enthusiast actually needs — simply did not exist yet.
Built around
Parts list
144 components, 83 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 8284A | DIP-18_W7.62mm | U1 |
| 4 | LS245 | DIP-20_W7.62mm | U2, U9, U15, U32 |
| 1 | 8088 | DIP-40_W15.24mm | U3 |
| 1 | 8087 | DIP-40_W15.24mm_Socket | U4 |
| 3 | LS373 | DIP-20_W7.62mm | U5, U7, U11 |
| 6 | LS244 | DIP-20_W7.62mm | U6, U12, U14, U16, U17, U41 |
| 1 | 8288 | DIP-20_W7.62mm | U8 |
| 1 | LS670_U10 | DIP-16_W7.62mm | U10 |
| 2 | 27C256 (32KX8) | DIP-28_W15.24mm | U18, U19 |
| 1 | ATF16V8BXX-XXPU ATF16V8Bxx-xxPU | DIP-20_W7.62mm | U20 |
| 1 | 74LS175 | DIP-16_W7.62mm_Socket | U21 |
| 1 | LS27_U23 | DIP-14_W7.62mm | U23 |
| 1 | LS00_U24 (74S) | DIP-14_W7.62mm | U24 |
| 1 | 8259A | DIP-28_W15.24mm | U25 |
| 1 | 8253-5 | DIP-24_W15.24mm | U26 |
| 1 | LS322_U27 | DIP-20_W7.62mm | U27 |
| 1 | 8237A-5_U28 | DIP-40_W15.24mm | U28 |
| 1 | 8255A-5 | DIP-40_W15.24mm | U29 |
| 2 | LS138 | DIP-16_W7.62mm | U43, U45 |
| 1 | LS20_U57 | DIP-14_W7.62mm | U57 |
Show 63 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LS32_U58 | DIP-14_W7.62mm | U58 |
| 1 | 7407_U68 | DIP-14_W7.62mm | U68 |
| 1 | LS00_U85(t) | DIP-14_W7.62mm | U69 |
| 1 | 74S74N (74S) | DIP-14_W7.62mm | U70 |
| 1 | LS04_U71 | DIP-14_W7.62mm | U71 |
| 1 | LS10_U72 | DIP-14_W7.62mm | U72 |
| 2 | 74LS74AN | DIP-14_W7.62mm | U73, U86 |
| 1 | LS00_U74 (sU99) | DIP-14_W7.62mm | U74 |
| 1 | S08_U87 (74S) | DIP-14_W7.62mm | U87 |
| 1 | LS175 (74S) | DIP-16_W7.62mm | U88 |
| 1 | LS04 | DIP-14_W7.62mm | U89 |
| 1 | 74LS92 | DIP-14_W7.62mm | U91 |
| 1 | 74LS74 (74S) | DIP-14_W7.62mm | U93 |
| 1 | 74LS74 | DIP-14_W7.62mm | U94 |
| 1 | 74LS02 (74S) | DIP-14_W7.62mm | U95 |
| 1 | 74LS51 (74S) | DIP-14_W7.62mm | U96 |
| 1 | 74LS04 | DIP-14_W7.62mm | U97 |
| 2 | AS6C4008-55PCN | DIP-32_W15.24mm | U99, U101 |
| 1 | HM628128_DIP32_SOP32 | DIP-32_W15.24mm_Socket_LongPads | U102 |
| 1 | 2N3904 | TO-92_Inline | Q2 |
| 1 | 14.31818MHZ 14.31818MHz | Crystal_HC49-U_Horizontal | Y1 |
| 1 | CXO_DIP14 | Oscillator_DIP-14 | Y4 |
| 6 | ISA Bus connector | isa_edge_slot | J1, J2, J3, J4, J5, J6 |
| 1 | KEYBOARD | Keyboard | J9 |
| 1 | AT POWER CONNECTOR | AT_power_connector | J10 |
| 1 | SPEAKER | PinHeader_1x04_P2.54mm_Vertical | P3 |
| 1 | 1N4148 | D_DO-35_SOD27_P7.62mm_Horizontal | CR1 |
| 1 | ROM E/D | PinHeader_2x01_P2.54mm_Vertical | E1 |
| 1 | F1 | PinHeader_2x01_P2.54mm_Vertical | F1 |
| 2 | F3 | PinHeader_2x01_P2.54mm_Vertical | F2, F3 |
| 1 | RESET | PinHeader_1x03_P2.54mm_Vertical | PB1 |
| 1 | JP6 JP7 | PinHeader_2x02_P2.54mm_Vertical | SB1 |
| 1 | DIP_SWITCH | DIP_SWITCH | SW1 |
| 1 | JP5 TURBO SW | PinHeader_2x01_P2.54mm_Vertical | TB1 |
| 1 | ON | LED_D3.0mm_Clear | D16 |
| 1 | TURBO | LED_D3.0mm_Clear | D17 |
| 1 | IRQ1 | LED_D3.0mm_Clear | D18 |
| 1 | AEN | LED_D3.0mm_Clear | D19 |
| 1 | PPI | LED_D3.0mm_Clear | D21 |
| 1 | INTR | LED_D3.0mm_Clear | D22 |
| 1 | T/C | LED_D3.0mm_Clear | D23 |
| 1 | DMA | LED_D3.0mm_Clear | D24 |
| 1 | RAM | LED_D3.0mm_Clear | D25 |
| 1 | ROM | LED_D3.0mm_Clear | D26 |
| 1 | MEMR | LED_D3.0mm_Clear | D27 |
| 1 | MEMW | LED_D3.0mm_Clear | D28 |
| 1 | IOR | LED_D3.0mm_Clear | D29 |
| 1 | IOW | LED_D3.0mm_Clear | D30 |
| 1 | 5-30PF 5-30pf | VR | C1 |
| 4 | 47PF 47pF | cap_unipolar | C2, C4, C7, C9 |
| 18 | 10uF 25V | cap_tantalum_pos | C3, C10, C11, C12, C13, C14, C15, C16 +10 |
| 14 | 0.047UF 0.047uF | cap_unipolar | C5, C6, C8, C17, C18, C55, C57, C60 +6 |
| 1 | 100NF 100nF | cap_unipolar | C20 |
| 2 | 10uF 25V | cap_tantalum_neg | C58, C68 |
| 2 | 510 | resistor | R1, R2 |
| 1 | 100K | resistor | R3 |
| 1 | 10R | resistor | R4 |
| 1 | 33R | resistor | R6 |
| 3 | 27R | resistor | R7, R8, R9 |
| 1 | 4.7K | resistor | R14 |
| 4 | 4.7K | R_Array_SIP9 | RN1, RN2, RN3, RN4 |
| 1 | 8.2K | R_Array_SIP9 | RN6 |
| 2 | 510R | R_Array_SIP9 | RN7, RN8 |