Tag: reset

Adds two configurable joystick ports, reset control, activity indicators, and an expansion pass-through to ZX Spectrum hardware.

Lotharek marks the interface discontinued and explicitly says it does not work on the Timex 2048. A used unit can contain first-release or later firmware with different mode choices and address decoding, so identify the firmware and test pass-through hardware before relying on it.

Selects between two programmed Atari operating-system ROM banks according to the Reset key state at power-on.

Lotharek's version 2 page exposed a login-or-register-to-buy path on 2026-07-27. It arrives flashed with Atari OS and QMEG 4.04, and a small onboard switch selects the default bank. A socketed OS ROM makes installation simple; otherwise the original ROM must be desoldered and a socket should be fitted. The page markets the device for Atari 8-bit computers but illustrates only an 800XL connection, so broader target relationships remain withheld. Do not use it with Ultimate 1MB.

Passive one-to-three Commodore 64 user-port expander with an onboard reset button.

The Arcadia by Eye-Box listing was out of stock on 2026-07-27. A reviewed Shareware Plus unit exposed three connectors. The right-hand position can obstruct the cassette port, and the passive board has no per-slot disable controls. Connect or remove peripherals only with power off.

Single-position angled C64 cartridge adapter with power switching, reset, an activity LED, and support feet.

The black, red, and white variants were all out of stock on 2026-07-27. Color variants are one hardware family. This adds convenience rather than another simultaneous cartridge position; power off the computer before connecting or removing either board.

Three-slot C64 and C128 cartridge-port expander with per-slot switching, a fuse, status LEDs, and reset.

AMI64 presented a current-priced listing on 2026-07-27. The seller explicitly excludes the Commodore 64 Ultimate and Ultimate 64. Cartridge combinations can still conflict electrically or in the memory map, so change connections only with power off and enable only known-compatible combinations.

Adds selectable CPU and peripheral clock rates plus supervised power-on reset.

Current kits include a 7.3728 MHz single-speed version and a multispeed version. A DS1233 reset monitor holds the CPU in reset while power stabilizes and a button provides manual reset. The optional manual clock switch is not supplied.

Compact two-connector cartridge-port expander with an upright slot and reset button for C64-family computers.

Protovision showed 12 Mini X-Pander+ units in stock with a one-to-two-week shipping estimate on 2026-07-27. The seller explicitly says it is not compatible with the 1541 Ultimate 2. Two enabled cartridges must use compatible bus signals and different address ranges.

Adds a PS/2 or PS/2-compatible USB keyboard to a ZX Spectrum 48K or Spectrum+ through an internal keyboard-interface board.

The seller exposed a login-or-register-to-buy path on 2026-07-27. It explicitly targets the 48K and Spectrum+ and warns that the original keyboard may stop working while the adapter is installed. The two signal modes use different motherboard signals; select the documented jumper state for the exact board and change hardware only with power removed. A USB keyboard works only if it supports the PS/2 protocol through its connector.

Open 90-degree cartridge adapter that brings a C64 cartridge upright and can include a reset button.

Sordan exposed an assembled C64 unit with a printed case and stand for dispatch in one to three working days on 2026-07-27. The open repository also provides fabrication files and a printable-enclosure link. A completed 2024-2025 seller run offered bare, kit, and assembled versions tested on C64 or C128 systems.

Add supervised 5 V power, manual reset, and power-on reset to an RCBus system.

The projects provide schematics, Gerbers, PCB design files, and kit or bare-PCB suppliers; assembled versions are not offered. SC712 requires a regulated 4.75 V to 5.25 V input. SC703's linear regulator can run hot at higher input voltages and loads. Enable only one voltage supervisor in a system.

Provides a modular Z80 processor with flexible clock and reset options.

The project provides a schematic, Gerbers, PCB design files, and kit or bare-PCB suppliers; an assembled version is not offered. PCB v1.0.0 needs a wire link across C7 when X2 is not populated. Enable only one voltage supervisor in a system.

Adds supervised power-on reset, a debounced reset button, and software-triggered reset.

The project provides a schematic, Gerbers, PCB design files, and kit or bare-PCB suppliers; an assembled version is not offered. Enable only one voltage supervisor in a system and choose an I/O address that does not conflict with another module.

Uses the SX-64's existing drive-reset button to reset the computer, change drive numbers, and switch ROM sets.

All three official variants were in stock on 2026-07-30: the assembled and tested board at USD 19.95, the easy-to-build kit at USD 9.95, and the bare-parts and programmed-CPU TFT version at USD 6.95. The standard assembled board is the simplest option. Installation still requires opening the SX-64 and soldering; the TFT variant is only for the separately documented TFT conversion.

Open cartridge-port expander with three independently controlled positions, configurable bus signals, and a reset switch.

The official store exposed an active $30 listing on 2026-07-27, and the open Eagle files remain available. Cartridge combinations are not guaranteed, the two connectors at the third position share one set of switches, and the passive bus can worsen marginal signal integrity. Insert, remove, and configure hardware only with the computer powered off.