per
Veteran Member
1st:
I got this Lotus Designs LD1101 UART in a I/O card and I'm not sure if it is a clone of an 8250, 8250A, 16450 or 16450A. The card got a 1.8432MHz Crystall. The manual states it should work in both the PC, XT and AT. See attachement for a picture of the card.
2nd:
As of serial communications, you usually need 2 parts, Data Terminal Equipment (DTE, like terminals) or Data Communications Equipment (DCE, like modems and mainframe/other computers). However, the confusing part is that IBM wiered the Async adapter for the PC as a DTE, even though the IBM PC is more a computer than a terminal! But then, is older micorcomputers (like the Altair 8800 or early Apple II's) wiered the same, or are they wiered as DCE's?
I got this Lotus Designs LD1101 UART in a I/O card and I'm not sure if it is a clone of an 8250, 8250A, 16450 or 16450A. The card got a 1.8432MHz Crystall. The manual states it should work in both the PC, XT and AT. See attachement for a picture of the card.
2nd:
As of serial communications, you usually need 2 parts, Data Terminal Equipment (DTE, like terminals) or Data Communications Equipment (DCE, like modems and mainframe/other computers). However, the confusing part is that IBM wiered the Async adapter for the PC as a DTE, even though the IBM PC is more a computer than a terminal! But then, is older micorcomputers (like the Altair 8800 or early Apple II's) wiered the same, or are they wiered as DCE's?
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