hkzlab's repositories
ES1868_ISA8
ISA 8bit sound card based on the ES1868F sound chip, providing Sound Blaster PRO and OPL3 compatibility in a highly integrated package
ES688_ISA8
Sound Card for the ISA (8bit) bus sporting Sound Blaster / Sound Blaster PRO emulation via ES688F chip, and a real Yamaha OPL3 FM Synth. It's also completely jumper configurable.
ISA_8bitNetwork_8019
8bit ISA NE2000-compatible network card based on the RTL8019AS chip
ISA_EMS_4Mb
ISA 4Mb EMS expansion board
ISA_EGA_CHIPS
This board is and EGA clone based on a reversed PA-WTEGA card, based on the chipset by CHIPS (P82C435 + P82A436).
CGA_Schematics
IBM Colour Graphics Adapter schematics redrawn in KiCad
ISA_EMS_2Mb
ISA 8bit EMS 2Mb expansion card
ISA_DualUARTParport
8 bit ISA Parallel port + dual UART adapter
TTL-to-RGB
This board converts CGA/EGA/MDA/Hercules TTL signals into analog RGB signals that can be fed into a compatible monitor
A500_r5-eprom_adapter
Amiga 500 rev.5 EPROM adapter for 27C020, 27C040 and 27C080
DWAVE_MIDI_Wavetable
DWAVE is a small General MIDI module for the wavetable connector of your old sound card, based on the SAM2695 chip
386DX_QFP_PGA_Adapter
A QFP -> PGA adapter for 386DX CPUs
ISA_QuadUART2
This 8-bit ISA board will provide 4 serial RS232 ports using a single 16C554 controller. 2 ports are exposed on an external bracket and 2 are on internal headers.
EGA-2-RGBS
EPROM based EGA/CGA to analog RGBS converter
MIDI-Stick
MIDI-Stick is a small MIDI synth based on the SAM2965 that plugs in the joystick port of your sound card
ISA_QuadUART
ISA 8-bit Quad serial adapter
SCART_SyncSplitter
SCART Sync cleaner/splitter
OtterX_Ram_Expansion
RAM Expansion for the OtterX (CommanderX16 compatible) computer
JCart_Megadrive_RE
Reverse Engineering effort for the Megadrive JCart 4 player accessory
supercar_larson_scanner
A simple SMD Larson Scanner board made out of 74' logic
A2E_IOU_SpeakerReplacement
Apple IIe IOU Speaker decoding replacement circuitry