2 layers101.6 × 147.3 mm
Karabas pro revEU
andykarpov/karabas-pro
FPGA based retrocomputer with FDD and HDD controllers
223 parts37MIT
2 layers101.6 × 147.3 mm
Karabas pro revER
andykarpov/karabas-pro37FPGA based retrocomputer with FDD and HDD controllers
- Size
- 101.6 × 147.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 223
- Nets
- 345
- Pads
- 1,285
- Tracks, vias
- 4,250, 688
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 21 Jun 2020
- Updated
- 28 Oct 2026
Overview
Karabas pro revER is an open-source printed circuit board by andykarpov, from the andykarpov/karabas-pro repository on GitHub, published under the MIT licence. It is a 2-layer board of 101.6 × 147.3 mm with 223 parts on 345 nets, routed with 4,250 tracks and 688 vias.
It is built around the 74LS384N, ATMEGA328-AU and EP4CE10E22C8N, with the EPM3128ATC100-10N, ESP-12E and LM2596S-5.0 among its other parts. Its parts include 81 resistors, 62 capacitors, 22 ICs, 10 connectors and 6 diodes. It belongs with the fPGA and programmable logic boards and the ESP8266, AVR (ATmega, ATtiny) and FPGA and CPLD boards of this library.
Main components
1274LS384N
-- Digital Signal Processors (DSP/DSC) ROHSRochester Electronics, LLCDigital Signal Processors (DSP/DSC)
ATMEGA328-AU
TQFP-32(7x7)-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH TQFP-32(7x7) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
EP4CE10E22C8N
EQFP-144EQFP-144(20x20) CPLD/FPGA ROHSIntel/AlteraCPLD/FPGA
EPM3128ATC100-10N
TQFP-100(14x14)0℃~+70℃ 10ns 128 2500 3V~3.6V 8 80 In-system programming MAX 3000A Supports hot swap TQFP-100(14x14) Programmable Logic Device (CPLDs/FPGAs) ROHSIntel/AlteraProgrammable Logic Device (CPLDs/FPGAs)
ESP-12E
SMD,24x16mm-20℃~+70℃ -90dBm 16dBm 170mA 2.4GHz 3V~3.6V 56mA 802.11b/g/n ESP8266 Chip On-board PCB Antenna Over-the-air (OTA) update UART、SPI、I2C SMD,24x16mm WiFi Modules ROHSAi-ThinkerWiFi Modules
LM2596S-5.0
TO-263-5-40℃~+125℃@(TJ) 1 150kHz 3A 4.5V~40V 5V 5mA Buck Buck Built-in Fixed No TO-263-5 DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
TXB0104PW
TSSOP-14-40℃~+85℃ 1 1.2V~3.6V 1.65V~5.5V 100Mbps 4 Auto Direction Detection Bidirectional CMOS CMOS Tri-State TSSOP-14 Translators, Level Shifters ROHSTexas InstrumentsTranslators, Level Shifters
AMS1117-1.2
SOT-223-40℃~+125℃@(Tj) 0.003%Vout 1 1.2V 1.3V@(1A) 10mA 18V 1A 60dB@(120Hz) Fixed Over Current Protection Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSUMWVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsAMS1117-2.5
SOT-223-40℃~+125℃ 0.003%Vout 1 1.3V@(1A) 18V 1A 2.5V 5mA 60dB@(120Hz) Fixed Over Current Protection Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSUMWVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsAMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
DS1307Z+
SO-80℃~+70℃ 10nA 300nA 4.5V~5.5V Backup power management and battery charging、InsideSRAM/NVRAM、Programmable clock output External I2C SO-8 Real Time Clocks ROHSMaxim Integrated (Analog Devices)Real Time Clocks
LM311
SOP-80℃~+70℃ 1 1.7nA 2.4mA 200ns 2mV 36V 45nA 5V~30V TTL、CMOS ±15V SOP-8 Comparators ROHSGcoreComparators
README
README.mdKarabas-Pro
Yet another FPGA ZX Spectrum clone ;)
Intro
ZX Spectrum compatible machine with a soft CPU, FDD and HDD (CF card) controllers, PS/2 keyboard/mouse, ESP8266 UART, RTC, VGA output and all logic inside the Altera FPGA EP4CE10.
The idea
The idea was to make a smaller Profi (Профи) ZX Spectrum clone, with real FDD and HDD controllers. The board size fits the dimensions of the real 3.5" floppy drive.
Firmwares
The main firmware is finished and currently it implements:
- ZX Spectrum classic and profi hi-res hi-color mode (with palette) (512x240)
- ZX Profi CMR ports for extended peripherial
- FDD controller that works both in CP/M and classic modes
- HDD controller (works in Profi CP/M mode and PQ-DOS mode)
- PS/2 keyboard (XT keyboard emulation)
- PS/2 mouse (kempston mouse and serial MS mouse emulation)
- VGA output (requires a monitor with 50Hz support)
- Turbosound (2 x AY-3-8912), Soundrive and SAA1099 (SAA will work only on EP4CE10 due to lack of free LEs in EP4CE6)
- Kempston joystick support
- SEGA joystick support
- RTC (profi), emulated read/write support
- SD card access via Z-Controller emulation as well as DivMMC
- Turbo 7 MHz (nowait) and Turbo 14 Mhz (with wait cycles)
- ZX UNO simple UART @115200 for ESP8266 module, ZiFi API support (a secondary ZX UNO UART available on uBus connector for EP4CE10)
- An additional ROM bank with PQ-DOS BIOS
- An additional ROM bank with Flash Tool by Doctor Max to upgrade the FGPA firmware and ROM banks without programmer
- An additional ROM bank with FDImage Tool by Doctor Max to extract TRD, SCL, PRO, TD0 and FDI images on real floppies
- OSD menu
- OSD full-screen overlay with easy-to-change options, RTC setup, etc.
More info
ERRATA for PCB rev.A: See ERRATA Rev.A.
ERRATA for PCB rev.B: See ERRATA Rev.B.
ERRATA for PCB rev.С: See ERRATA Rev.С.
Latest stable revision: rev.Ї.
PCB changelog: PCB changelog.
Profi firmware Download a Profi firmware.
Donations See DONATIONS.md.
Development & Building
AVR Firmware
The ATmega328P supervisor firmware is built using PlatformIO:
cd firmware/src/avr
pio runThis compiles the universal firmware, generates all revision-specific .eep files, and automatically syncs them to firmware/releases/.
To automatically rebuild and stage updated firmware binaries whenever you commit AVR changes, install the git hooks:
./scripts/install-hooks.shPre-production renders:
Parts
223| Qty | Value | Footprint | References |
|---|---|---|---|
| 40 | 100n | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C11, C12, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23, C24, C25, C26, C27 +24 |
| 23 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R30, R31, R33, R34, R35, R36, R37, R38, R39, R40, R41, R42, R43, R44, R45, R46 +7 |
| 8 | 100n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C13, C55, C56, C58, C59, C60, C61, C63 |
| 8 | MountingHole | MountingHole:MountingHole_3.5mm_Pad_Via | H1, H2, H3, H4, H5, H6, H7, H8 |
| 7 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R6, R11, R14, R17, R74, R75, R76 |
| 6 | 330 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R64, R65, R66, R67, R68, R69 |
| 6 | 4k7 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R7, R8, R21, R22, R23, R24 |
| 5 | 100 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R63, R70, R71, R72, R73 |
| 5 | 27 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R4, R57, R77, R78, R79 |
| 5 | 470 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R28, R29, R54, R55, R56 |
| 3 | 10uF | footprints:CP_EIA-7343-31_Kemet-D-uni | C7, C8, C9 |
| 3 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R82, R83, R84 |
| 3 | 2k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R10, R13, R16 |
| 3 | 2k4 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1, R2, R3 |
| 3 | 510 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R12, R15, R18 |
| 2 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C1, C2 |
| 2 | 1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C3, C10 |
| 2 | 22p | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C4, C5 |
| 2 | 75 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R19, R20 |
| 2 | 750 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R26, R27 |
| 2 | BAT54C | Package_TO_SOT_SMD:SOT-23 | D3, D8 |
| 2 | CY62167EV30LL | Package_SO:TSOP-I-48_18.4x12mm_P0.5mm | U2, U19 |
| 2 | LOGO | footprints:karabas_pro_logo_rus2_copper | G***, G*** |
| 2 | Polyfuse_Small | Fuse:Fuse_1812_4532Metric_Castellated | F1, F2 |
| 2 | TXB0104PW | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U7, U8 |
| 2 | W25Q16 | footprints:SOIC-8_5.23x5.23mm_P1.27mm-LONG | U3, U3''1 |
| 1 | 100uF | footprints:CP_EIA-7343-31_Kemet-D-uni | C54 |
| 1 | 12В | Connector_BarrelJack:BarrelJack_Wuerth_6941xx301002 | CON8 |
| 1 | 12В ВКЛ | Jumper:SolderJumper-2_P1.3mm_Bridged_Pad1.0x1.5mm | JP1 |
| 1 | 15k* | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R48 |
| 1 | 16MHz | Crystal:Crystal_HC49-U_Vertical | Y2 |
| 1 | 1M | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R62 |
| 1 | 1N4148W | Diode_SMD:D_SOD-123 | D10 |
| 1 | 1N5820 | Diode_THT:D_DO-201AD_P15.24mm_Horizontal | D5 |
| 1 | 1n | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C6 |
| 1 | 220uF | Capacitor_THT:CP_Radial_D7.5mm_P2.50mm | C50 |
| 1 | 300 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R61 |
| 1 | 32768Hz | Crystal:Crystal_AT310_D3.0mm_L10.0mm_Horizontal_1EP_style2 | Y1 |
| 1 | 33 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R32 |
| 1 | 33k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R81 |
| 1 | 3n3 | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C57 |
| 1 | 3В | footprints:BAT_BS-7-BLUE | BT1 |
| 1 | 470uF | Capacitor_THT:CP_Radial_D8.0mm_P3.80mm | C48 |
| 1 | 5k1 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R80 |
| 1 | 68uH | Inductor_SMD:L_12x12mm_H6mm | L1 |
| 1 | 74LS06 | Package_DIP:DIP-14_W7.62mm | U17 |
| 1 | 74LS38 | Package_DIP:DIP-14_W7.62mm | U18 |
| 1 | 820 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R25 |
| 1 | AMS1117-1.2 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U14 |
| 1 | AMS1117-2.5 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U13 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:TO-252-2 | U12 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U21 |
| 1 | ATMEGA328-AU | Package_QFP:TQFP-32_7x7mm_P0.8mm | U5 |
| 1 | AVR JTAG | Connector_IDC:IDC-Header_2x03_P2.54mm_Horizontal | J5 |
| 1 | AVR UART | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J6 |
| 1 | BC847 | Package_TO_SOT_SMD:SOT-23 | Q2 |
| 1 | BC856 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | BS62LV1600 | Package_SO:TSOP-II-44_10.16x18.41mm_P0.8mm | U20 |
| 1 | DS1307Z+ | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U9 |
| 1 | EP4CE10E22C8N | footprints:ALTERA-QFP-145 | U1 |
| 1 | EPM3128ATC100-10N | Package_QFP:LQFP-100_14x14mm_P0.5mm | U4 |
| 1 | ESP-12E | RF_Module:ESP-12E | U10 |
| 1 | ESP-BUS | Connector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_Vertical | J7 |
| 1 | FPGA JTAG | Connector_IDC:IDC-Header_2x05_P2.54mm_Horizontal | J2 |
| 1 | Ferrite_Bead | Inductor_SMD:L_0805_2012Metric_Pad1.15x1.40mm_HandSolder | FB1 |
| 1 | LM2596S-5 | Package_TO_SOT_SMD:TO-263-5_TabPin3 | U15 |
| 1 | LM311 | Package_SO:SO-8_3.9x4.9mm_P1.27mm | U16 |
| 1 | LOGO | footprints:andy_karpov_logo4_silk | G*** |
| 1 | MB8877A | Package_DIP:DIP-40_W15.24mm | U6 |
| 1 | SG-7050CAN | Oscillator:Oscillator_SMD_SeikoEpson_SG8002CA-4Pin_7.0x5.0mm | X1 |
| 1 | SM6T6V8A | Diode_SMD:D_SMB | D9 |
| 1 | SW_SPST | Button_Switch_THT:SW_CuK_OS102011MA1QN1_SPDT_Angled | SW4 |
| 1 | TDA1543 | Package_DIP:DIP-8_W7.62mm | U11 |
| 1 | UART2 | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J4 |
| 1 | X* | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R53 |
| 1 | АКТИВНОСТЬ | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D2 |
| 1 | ВНЕШН. ДЖОЙСТИК | Connector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_Vertical | J10 |
| 1 | ДЖОЙСТИК | Connector_Dsub:DSUB-9_Male_Horizontal_P2.77x2.84mm_EdgePinOffset7.70mm_Housed_MountingHolesOffset9.12mm | CON4 |
| 1 | ДИСКОВОД | Connector_IDC:IDC-Header_2x17_P2.54mm_Vertical | J1 |
| 1 | ЗВУК | Connector_Audio:Jack_3.5mm_CUI_SJ1-3535NG_Horizontal | CON7 |
The 204 most common of 223 parts.
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Questions
How big is the Karabas pro revER PCB?
It measures 101.6 × 147.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Karabas pro revER use?
223 parts, built around the 74LS384N, ATMEGA328-AU, EP4CE10E22C8N and EPM3128ATC100-10N. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Karabas pro revER KiCad files?
From the andykarpov/karabas-pro repository on GitHub, at the commit this page was made from: the board is pcb/revER/karabas-pro-revER.kicad_pcb and its schematic pcb/revER/karabas-pro-revER.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Karabas pro revER design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).