Tag: irq

2 matching upgrades

Showing 2 products.

Status Product What it does Compatibility Links

Status	Product	What it does	Compatibility	Links
Build itChecked Jul 30, 2026	GLINK232 / GLINK232Tby GGLABS rs 232 serial expansion port uart 6551 swiftlink compatible 38400 baud 230400 baud irq nmi gerbers	Expansion-port UART family with SwiftLink-compatible GLINK232 and faster Turbo232-compatible GLINK232T forms. GLINK232 A03 remains buildable from its schematic, Gerbers, and component-option tables. The faster assembled GLINK232T was unavailable while its Tindie seller was taking a break on 2026-07-30, and its page does not provide a complete fabrication package. The seller text misprints the top T rate as 203400 baud; the maker's overview and register table specify 230400 baud. Sources GGLABS GLINK232T page GGLABS GLINK232 A03 page GLINK232T Tindie listing	Commodore 64 Exact model Commodore 128 Exact model	GGLABS GLINK232T project page GGLABS GLINK232 A03 project and build files GLINK232T Tindie listing GLINK232T C01 schematic
AvailableChecked Jul 30, 2026	IRQ LED Mod Familyby WizardNJ / Shareware Plus / tebl c64 vic 20 irq power led internal mod open hardware reversible	Replaces the power light with a two-color indicator that shows the computer's IRQ-line state. Shareware Plus said the C64 breadbin, C64C slimline, and VIC-20 versions were in stock at GBP 9 each plus postage on 2026-01-25 and accepts email orders. The tebl C64 design is buildable under CERN OHL v1.2. This is an IRQ-line indicator, not a complete CPU-usage or disk-activity meter. Installation opens the computer and places clips on cartridge-port ground, +5 V, and IRQ contacts; verify every connection with power off. Sources Shareware Plus IRQ LED Mod page Lyonsden IRQ LED Mod review tebl C64 IRQ LED repository tebl C64 IRQ LED license	Commodore 64 Exact model Commodore VIC-20 Exact model	Shareware Plus IRQ LED Mod tebl C64 IRQ LED open hardware Order the tebl bare PCB Hands-on C64 and VIC-20 installation

Build itChecked Jul 30, 2026

GLINK232 / GLINK232Tby GGLABS

Expansion-port UART family with SwiftLink-compatible GLINK232 and faster Turbo232-compatible GLINK232T forms.

GLINK232 A03 remains buildable from its schematic, Gerbers, and component-option tables. The faster assembled GLINK232T was unavailable while its Tindie seller was taking a break on 2026-07-30, and its page does not provide a complete fabrication package. The seller text misprints the top T rate as 203400 baud; the maker's overview and register table specify 230400 baud.

Sources

Commodore 64 Exact model
Commodore 128 Exact model

GGLABS GLINK232T project page GGLABS GLINK232 A03 project and build files GLINK232T Tindie listing GLINK232T C01 schematic

AvailableChecked Jul 30, 2026

IRQ LED Mod Familyby WizardNJ / Shareware Plus / tebl

Replaces the power light with a two-color indicator that shows the computer's IRQ-line state.

Shareware Plus said the C64 breadbin, C64C slimline, and VIC-20 versions were in stock at GBP 9 each plus postage on 2026-01-25 and accepts email orders. The tebl C64 design is buildable under CERN OHL v1.2. This is an IRQ-line indicator, not a complete CPU-usage or disk-activity meter. Installation opens the computer and places clips on cartridge-port ground, +5 V, and IRQ contacts; verify every connection with power off.

Sources

Commodore 64 Exact model
Commodore VIC-20 Exact model

Shareware Plus IRQ LED Mod tebl C64 IRQ LED open hardware Order the tebl bare PCB Hands-on C64 and VIC-20 installation