Deep Dive: CTS Flow Control in the Serial/Modem System
Why you can't just shovel bytes through a virtual modem: RTS/CTS backpressure, buffer gates, and the timing budget that makes dial-up feel like dial-up.
ARTICLES // TAG
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modem
5 articles tagged with "modem"
Build System Groundwork and Modem Plumbing
Making the WASM build honest about its dependencies, loading backends on dial, and giving the modem one source of truth for pacing.
Deep Dive: Bell 212A and V.32bis Handshakes
Simulating Bell 212A and V.32bis handshakes: phase modulation, training sweeps, and why the negotiation audio has the shape it does.
Deep Dive: Bell 103 Audio Modem and FSK Implementation
Implementing the 1962 modem standard behind 300 baud dialup: FSK modulation, Goertzel demodulation, and the two-band split that makes full duplex work.
A Small Day That Mattered
Nine small bugs in the CRT, modem, and BBS paths, cleared before they had a chance to compound.