Jhoger at 05:08, 6 April 2009

2009-04-06T05:08:48Z

← Older revision		Revision as of 22:08, 5 April 2009
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	session of DLPilot, certain serial HotSync cables used with PalmOS		session of DLPilot, certain serial HotSync cables used with PalmOS
	devices are deficient (i.e., are the inferior arrangement).		devices are deficient (i.e., are the inferior arrangement).

			[[Category:File Transfer]]

Jhoger: /* Overview */

2008-12-05T05:58:48Z

Overview

← Older revision		Revision as of 22:58, 4 December 2008
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	you type during a session of TEENY.CO.		you type during a session of TEENY.CO.

	Slave Disk Devices		== Slave Disk Devices ==

	There are several disk devices that respond in the appropriate slave		There are several disk devices that respond in the appropriate slave
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	that is inherited from TEENY.EXE.		that is inherited from TEENY.EXE.

	Null-modem Cable		== Null-modem Cable ==

	The laptop has a DB25 female connector, so it mates to a male connector		The laptop has a DB25 female connector, so it mates to a male connector

64.81.88.222: New page: == Overview == TEENY is freeware placed in the public domain by Ron Wiesen. TEENY is useful to owners of Tandy laptop Models 100, 102, and 200. The laptop file TEENY.CO is the essence ...

2008-12-05T05:31:29Z

New page: == Overview == TEENY is freeware placed in the public domain by Ron Wiesen. TEENY is useful to owners of Tandy laptop Models 100, 102, and 200. The laptop file TEENY.CO is the essence ...

New page

== Overview ==

TEENY is freeware placed in the public domain by Ron Wiesen. TEENY is
useful to owners of Tandy laptop Models 100, 102, and 200. The laptop
file TEENY.CO is the essence of TEENY freeware. Rather than directly
distribute a particular incarnation of file TEENY.CO, TEENY freeware is
distributed as the Personal Computer (PC) executable file TEENY.EXE.

Three pieces of hardware are required to use TEENY.EXE: a PC to invoke
TEENY.EXE, a null-modem cable, and a Tandy laptop. Any PC that has at
least one COM port will do -- COM1, COM2, COM3, or COM4. Any type of
null-modem cable is sufficient -- see "Null-modem Cable" for detail. A
Tandy laptop Model 100, 102, or 200 is required.

Think of TEENY.EXE as a use-rarely or use-once facility which is PC
based. TEENY.EXE has one primary objective -- create within the Tandy
laptop an incarnation of file TEENY.CO that fits your circumstance and
preferences. A related option deposits within the Tandy laptop the
BASIC file TEENY.BA, which is a similar facility that is laptop based.
Think of TEENY.BA as a stand-alone laptop capability to create
incarnations of file TEENY.CO to fit new circumstances of the future.
Think of TEENY.CO as something you use everyday -- invocation of
TEENY.CO starts a working session of Teeny operation. Teeny operation
is a Master/Slave working arrangement where TEENY.CO is Master of a
Slave disk device attached to the laptop. Laptop files transfer
between the laptop and the Slave disk device according to commands that
you type during a session of TEENY.CO.

Slave Disk Devices

There are several disk devices that respond in the appropriate slave
fashion to master stimulation at the laptop COM port. The chart below
lists slave disk devices that can be used with TEENY.CO as a master.

<pre>
______ Slave Disk Device ______ _____ Device Operational Speeds _____
| Brother Disk Drive FB100 | 9600 Baud only |
| PalmOS and session of DLPilot | 19200 Baud only |
| PC during session of DeskLink | 19200 or 9600 Baud per command line |
| Purple Computing Disk Drive | 19200 or 9600 Baud per DIP switches |
| Tandy Portable Disk Drive | 19200 or 9600 Baud per DIP switches |
| Tandy Portable Disk Drive 2 | 19200 Baud only |
</pre>

DIP switches set the operational speed of the Purple Computing Disk
Drive and the Tandy Portable Disk Drive. Set the rearmost DIP switch
to its: outboard position for 19200 Baud, or inboard position for 9600
Baud. Be sure to leave the other three DIP switches at their outboard
position. Cycle the power switch to OFF and then to ON -- this
establishes the operational speed.

The working speed of TEENY.CO must match the operational speed of the
slave disk device. The working speed of TEENY.CO is a matter of
circumstance for the Brother Disk Drive FB100 (9600 Baud), a PalmOS
device and session of DLPilot (19200 Baud), and the Tandy Portable Disk
Drive 2 (19200 Baud). These slave disk devices operate at only one
speed. In the rare case of a PC during a session of DeskLink where, by
circumstance of a hardware limitation, the COM port(s) can not operate
any higher than 9600 Baud, the working speed of TEENY.CO consequently
must be restricted to 9600 Baud. In other cases of a PC (no hardware
limitation) during a session of DeskLink, the working speed of TEENY.CO
is a matter of preference: 19200 Baud, or 9600 Baud. Likewise for the
other slave disk devices (Purple Computing Disk Drive and Tandy
Portable Disk Drive), the working speed of TEENY.CO is a matter of
preference: 19200 Baud, or 9600 Baud.

An incarnation of laptop file TEENY.CO works either at 19200 Baud or at
9600 Baud, based on how the incarnation is created. TEENY.EXE has a
command line switch for the working speed of TEENY.CO. Any incarnation
of TEENY.CO that is created by laptop file TEENY.BA has a working speed
that is inherited from TEENY.EXE.

Null-modem Cable

The laptop has a DB25 female connector, so it mates to a male connector
of the cable. Typically the PC has a male connector, so it mates to a
female connector of the cable. The connector at the PC is either a
type DB9, or a DB25 -- pin numbers for both types are shown in the
following diagrams.

A simple 3-wire type of null-modem cable is sufficient for use of
TEENY.EXE with Tandy laptop Models 100 and 102 -- no control lines
matter (none end to end, and none looped back at any end). This is
shown below.

<pre>
pin 07 DB25F
DB25M pin 07 ----- common ----- pin 05 DB9F own & other reference

pin 03 DB25F
DB25M pin 02 TXD ---->>---- RXD pin 02 DB9F own Xmt is other Rcv

pin 02 DB25F
DB25M pin 03 RXD ----<<---- TXD pin 03 DB9F own Rcv is other Xmt
</pre>

The null-modem cable that is shown above is not sufficient for use of
TEENY.EXE with Tandy laptop Model 200. Wiring of control lines at the
laptop end is added so that the RTS control line loops back to the CTS
control line. One connector end-conductor is added as shown below.

<pre>
DB25M pin 04 RTS --->>---+ own Request is
|
DB25M pin 05 CTS ---<<---+ seen as Clear
</pre>

A null-modem cable is also needed where the slave disk device is a PC
operating during a session of DeskLink. The null-modem cable that is
shown above is not sufficient for use by DeskLink. Although the three
cable through-conductors and the connector end-conductor are essential,
some additional wiring of control lines is required.

The RTS control line is looped back to the CTS control line at the PC
end. One connector end-conductor is added as shown below.

<pre>
pin 04 DB25F
+---<<--- RTS pin 07 DB9F other Request is
| pin 05 DB25F
+--->>--- CTS pin 08 DB9F seen as Clear
</pre>

There are three possible wiring arrangements for the DTR and DSR
control lines:

* Typical -- connector end-conductors for DTR looped back to DSR
* Preferred -- cable through-conductors for DTR and DSR
* Inferior -- DSR is not driven or DSR is not connected at laptop

The typical arrangement is used in commercially made null-modem cables,
such as the "CompLink" cable that is sold by Club 100. This
arrangement is shown below.

<pre>
DB25M pin 20 DTR --->>---+ own Ready is
|
DB25M pin 06 DSR ---<<---+ seen as Ready

pin 20 DB25F
+---<<--- DTR pin 04 DB9F other Ready is
| pin 06 DB25F
+--->>--- DSR pin 06 DB9F seen as Ready
</pre>

The preferred arrangement gives more precise error response by TEENY.CO
for faults involving the null-modem cable. This arrangement is shown
below.

<pre>
pin 06 DB25F
DB25M pin 20 DTR ---->>---- DSR pin 06 DB9F own Ready for other

pin 20 DB25F
DB25M pin 06 DSR ----<<---- DTR pin 04 DB9F other Ready for own
</pre>

The inferior arrangement always can be used. If you use it, you must
also make TEENY.CO not sensitive to the DSR control line (see the
"TEENY.EXE MANUAL" or the "TEENY.CO manual" for detail). Otherwise all
TEENY.CO operations fail and TEENY.CO issues the "NR Err" error code.
Note that the preferred arrangement of the null-modem cable virtually
is the inferior arrangement in circumstances where the DSR control line
is not driven due to a slave disk device that does not assert the DTR
signal. Such a circumstance is a deficiency (of hardware or software)
which may be impractical to remedy, and consequently the only practical
recourse is to make TEENY.CO not sensitive to the DSR control line. In
the case where the slave disk device is a PalmOS device during a
session of DLPilot, certain serial HotSync cables used with PalmOS
devices are deficient (i.e., are the inferior arrangement).

TEENY MANUAL - Revision history

Jhoger at 05:08, 6 April 2009

Jhoger: /* Overview */

64.81.88.222: New page: == Overview == TEENY is freeware placed in the public domain by Ron Wiesen. TEENY is useful to owners of Tandy laptop Models 100, 102, and 200. The laptop file TEENY.CO is the essence ...