Model 100: Difference between revisions

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===Serial cable===
===Serial cable===
The serial port on a Model 100 is wired DTE, the same as a com port on a PC, but with a female connector, unlike any pc.
[[Model_T_Serial_Cable]]


This is a backwards configuration from everything else today. There is some suggestion that maybe this is actually the original standard, and IBM came along later and changed it by putting male connectors on their PCs, but in any event, DTE ports being male has been the universal standard now for decades.
===Parallel cable===
*Any modem or printer or digital scale or any other kind of peripheral with a serial connection will be wired DCE with a female connector, usually 25 pin.
[[Model_T_Parallel_Cable]]
*Any serial port card or usb serial adapter for a PC will be wired DTE with a male connector, usually 9 pin.


That means that usually you always need some kind of adapter between a PC and a M100.
===RAM Expansion===
 
[[PG Designs M100 RAM Expansion|PG Designs]]
The easiest cable to assemble from common parts you may already have lying around, is a common 9F/25M pin serial [https://www.cablewholesale.com/products/serial-modem-cable/at-modem-cables/product-10d1-02303.php modem cable], combined with a 9F/9M [https://www.monoprice.com/product?p_id=1203 null-modem adapter].
 
The '''perfect''' cable though, would be a 9F/25M null-modem cable. That configuration is unusual, but they do exist. Here are some for reference:


*[https://www.monoprice.com/product?p_id=479 Monoprice 479]
===System ROM===
:This one is "perfect" in that it has the right connectors and wiring, without needing any null-modem or gender changer adapters added, and works with everything in the system rom and all normal software, including telcom, basic, and all tpdd clients.
[[Model_T_Y2K|Y2K Patch]]<br>
:However one thing it does not do is rts/cts. This cable has those signals shorted to self-satisfy on both ends.
[[FlexROM_100]]
:No built-in or 3rd party software uses hardware flow control (with one exception). IE there is no way to even set hardware flow control in TELCOM or in BASIC, and no DOS clients use it because the TPDD & TPDD-2 themselves don't.
:But the hardware in the M100 CAN actually use rts/cts if you manipulate the uart yourself from a machine language program (or I suppose, peek/poke from basic). The only software I know of that does this is HTERM. So this cable is NOT good enough for HTERM.


Others, probably better, but yet to be verified if any are really "full handshake":
===Option ROM===
*[https://www.tripplite.com/null-modem-serial-db9-serial-cable-db9-db25-female-male-6-ft~P456006/ Tripp-Lite P456-006]
[[Model 100 Option ROM pinout|Pinout]]<br>
*[https://www.cdw.com/shop/products/C2G-null-modem-cable-6-ft-white/1153481.aspx C2G 03019]
*[https://www.amazon.com/dp/B00O0749W4 Amphenol CS-DSNL4259MF-005]
 
===RAM Expansion===
[[PGDesigns]]
 
===ROM Adapters===
[[Model 100 Option ROM pinout|Pinouts]]<br>
[[REX]]<br>
[[REX]]<br>
[[FigTronix]]<br>
[[Teeprom]]
[[Molex_Chip_Carrier]]<br>


===Disk===
===Disk===
[[PDD-2]]<br>
[[TPDD|Tandy Portable Disk Drive]]<br>
[[Disk/Video Interface]]<br>
[[Disk/Video Interface]]<br>
[https://drive.google.com/drive/folders/1V_0imPo_JmF8xKWGJLOlfmnWdGPz5k-A Remote Disk]<br>


=Software=
=Software=
[[Text_Sweeper]]
[[Text_Sweeper]]
=Other resources=
[https://archive.org/details/M100SIG The M100 SIG Archive]<br>

Latest revision as of 10:16, 6 September 2021