1980-жылдардың Diversi Dial чат-серверінің тарихы

Diversi Dial, or DDial was an online chat server that was popular during the mid 1980s. It was a specialized type of bulletin board system that allowed all callers to send lines of text to each other in real time, often operating at 300 baud. In some ways, it was a sociological forerunner to IRC, and was a cheap, local alternative to CompuServe chat, which was expensive and billed by the minute. At its peak, at least 35 major DDial systems existed across the United States, many of them in large cities. During the evening when telephone rates were low, the biggest DDial systems would link together using Telenet or PC Pursuit connections, forming regional chat networks.

Diversi Dial was written by Bill Basham, a computer hobbyist who ran a company known as Diversified Software Research in Farmington Hills, Michigan. The software was written while he was a resident of Rockford, Illinois. Bill Basham ran a copy of the system himself in Rockford at the time. Kim Kirkpatrick, "Hubcap" also in Rockford, ran DDial#2 and a lot of early testing was done between Bill and Kim. Another early Rockford site was owned by Dale Wishop (GOD) named "Heaven and Hell The World that GOD Rulz Over!". The phone company had to run miles of new cable just to accommodate the additional phone lines. When "Heaven and Hell" shutdown, Dale sold some of his 1200 baud Applecat modems to Scott and Terri Johnson (Megabucks and Spender), and DDial #12 “Spenderz Never Inn” started up in its place, running on two Apple //e computers and 12 phone lines. All of Bill's software followed the same naming scheme as "Diversi [something]".

Customers typically paid the local DDial owner a flat rate of about $5 to $20 per month. Open access to anonymous visitors (called nons, r0s JAMFs or m0es) was an effective hook to draw in paid registrations. Nons typically had a five minute connect time limit unless they were "validated" by an assistant sysop, and were shut out of the system during peak usage hours. A typical DDial system ran on a small cluster of Apple II computers, with seven connections per computer. In 1989, a DDial like clone, Synergy Teleconferencing System AKA STS was developed for the IBM PC, but by this time it was outpaced by alternatives like GEnie. By the mid 1990s, DDials had been bypassed by the Internet and IRC, although Chicago's God's Country, kept an incredibly loyal following between 1985–87 and 1989 1998. Many of its users are still close to this day. Many client software programs existed for BBS connections back then, but one in particular for the Commodore 64 was optimized just for DDial, call Eagleterm 6a. Written by Jungle Jim (Jj), aka Jim Sanders, and released as freeware and saw widespread use among Ddialers. EagleTerm6a took full advantage of Commodore 64 pulse dial modem technology, heavily optimized to find the max pulse speed of the user's local phone connection, and rapid fire re dial back in to beat the other callers when reconnecting, easily beating the newer tone dial modems just coming to market. During peak times, the DDial system was jam packed with callers far exceeding the number of available lines, and a super fast dialer was a plus. Later versions of Eagleterm6a were protected against reverse engineering (not de compilable using unBlitz.)