16550a.zip    Toggle 16550 UART FIFOs on and off
16550s.zip    Toggle the NS16550A FIFO buffer, w/TPas source
16550s13.zip  Toggle the NS16550A FIFO buffer, w/TPas source
16550u.zip    Scan for serial ports on system, enable 16550
1pr2a.zip     Swaps LPT1 and LPT2 printer ports
34instal.zip  Adds DOS support for COMM ports 3 and 4
addport.zip   Adds COM3/COM4 ports to DOS equipment list
async.zip     Asynchronous communications routines
async1.zip    COMM driver [.ASM]
async2.zip    COMM driver [.ASM]
async_ce.zip  COMM port driver
aux2.zip      Makes the AUX driver talk to the COM2 port
auxil15.zip   Device driver redirects AUX output to CON
breakbox.zip  Software-based RS232 breakout box
com3_4.zip    Device driver adds COM3/4 that MS-DOS forgot!
comchk18.zip  Commchk 1.8: Serial port protocol analyzer
comfix12.zip  Windows COM port 'bug' fix/DOS COM port setup
comhelp.zip   Comprehensive comm/tutor and UART tester
comhex42.zip  Serial communications display program
comm.c        COMM driver [.C]
comm.doc      Doc for COMM.C
comprt25.zip  Config COM/LPT ports: Show address, IRQ & UART
comsnd14.zip  Send arbitrary characters to COM port from DOS
comst12.zip   Comset v1.2: Modem/UART/serial port tester
comtrap.zip   TSR to trap unexpected COM port interrupts
com_pkg1.zip  COMM drivers (source only)
com_pkg2.zip  COMM drivers (source only)
com_pkg3.zip  COMM drivers (source only)
ctsspu30.zip  COM port & modem setup & diagnostic utilities
czcm11b.zip   Driver allows various mixes of COM ports 1-4
db9_db25.zip  Wiring info: DB9 to DB25 serial connector
dcom20.zip    Captures COM port input. Requires two ports
dlm140.zip    Data Line Monitor: Turn PC into a datascope
fifo11.zip    Report type of UART (8250, 16550, etc.)
fx16550d.zip  Corrects problem with AMI BIOS and 16550 UART
ibmaux20.zip  Dual I/O driver for the AUX: device
iomon2.zip    IO Monitor 386 control watches COM ports
ioview.zip    Diagnostic - view of PC's I/O ports in action
ip122.zip     Serial interrupt and port verification program
kbfake10.zip  Redirects serial input as if from keybd, w/src
komm.asm      Installable device drivers for COM1 and COM2
komm.inf      Documentation for KOMM.ASM device driver
message.zip   Send msgs thru COM port between PCs, TSR w/src
new14h.zip    DOS-extension add functions to comm routines
ns16550.zip   Checks to see if NS16550AN serial chip is used
ns_16550.zip  Test 16450/16550/16550a serial chips w/source
ox.zip        Redirect DOS AUX I/O to keyboard/mono display
para13.zip    Parallel port information & diagnostic util.
pc_to_pc.zip  Assist on PC-PC direct connection
pf271.zip     Port Finder: Display info/swap LPT & COM ports
pipeln10.zip  TSR connects COM1 and COM2 serial ports
port11.zip    I/O port debugging tool, with C source code
portfind.zip  Locate & install serial & par. ports, COM3&4
ports13.zip   Permits reading and writing to hardware ports
portst11.zip  Diagnostic program for serial/parallel ports
prindir9.zip  COM/LPT port redir. to any other port or file
prlink20.zip  File transfer prog. via printer/parallel port
qic02a10.zip  Wangtek QIC-02 tape driver & Unix TAR I/O
rs204.zip     Displays RS-232 serial port status
rs232.zip     Source for COMM drivers (.ASM)
rs232101.zip  RS232 1.01, debug most of RS-232 problems
rs232of2.zip  Fix port conflicts, turns off all 4 COM ports
rts12.zip     Toggle RTS for COM1 to COM4 ports
sansint2.zip  Port utility - poll ports rather than use IRQs
serial.aqm    Serial/COMM port driver (squeezed)
serial.doc    Doc for SERIAL.AQM
serint.aqm    Interrupt-driven serial port driver
slikmode.zip  New MODE: Set baudrate to any rate w/C src
superv22.zip  Enhanced BIOS interrupt 14 comm support
swapcom.zip   Swap COM1 with COM2
swapport.zip  Swap LPT1 with LPT2
tandy232.asm  Replacement for Tandy 2000 RS232 I/O handler
timio3_0.zip  Timed record and playback COM port data
toadmod1.zip  Set COM 1-4 to 19200/38400/57600/115200 bps
tsrcomm.zip   TSR serial device driver
uartbug.zip   UART and COM port debuging tool, TSR
uartty12.zip  Displays type of UART chip for all comm ports
whtprt40.zip  Displays system serial ports & IRQ assignments
xport21.zip   Fast PC-to-PC RS232 serial line file transfer
z404mpsc.zip  Zenith COM3 port driver fix for gov't Z-248