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* [[TI-99/4A system usage | TI-99/4A system]] * [[MDOS usage|Geneve in MDOS mode]]

...A. This is used to select bit map mode. It does not seem to be of use from TI Basic.

* Supports 40 column text mode * Supports 80 column text mode - including the editor (V9938/58 video card or [[F18A]] video chip required

Back to [[MESS | TI MESS emulation home page]]. === TI-99/8 Extended Basic II with selected floppy controller locks up on start ==

There are various Real-time clock (RTC) chips used within the TI and Geneve systems. ...s mapping in the Native mode, while the right address column shows the GPL mode mapping.

...odule, Rock Runner utilizes a graphics mode never before seen in any other TI-99/4A or Geneve program- game or otherwise. ...lor capabilities of bit map mode with the speed and flexibility of pattern mode graphics to allow an unprecedented anount of full colour animated graphics!

== Using a TI console as a keyboard == ...MESS you can actually make good use of your old TI console: use it as a [[TI console as a USB keyboard | keyboard]].

...produced by Lee Stewart and available for burning into a TI Module. Unlike TI Forth which uses a sector based disk access, fbForth uses block based acces ...puzzled me that the TI developers limited E-notation to two digits in the TI-99/4A’s OS. fbForth 2.0 also features a font editor to allow users to eas

The [[Geneve Memory Management Functions | memory management ]] in Native mode is supported by a XOP call. == Native mode ==

== Native mode == == GPL mode ==

When in GPL mode (TI-99 simulation), this combination returns control to the GPL manager. Starts / Stops logging mode (output is copied to the printer).

This article shows how you can use the VDP features in a [[TI BASIC]] program, for example by using the [[Mini Memory]] Module and then s ...ition and colour of the cursor, or even to have a sprite or two running in TI BASIC...

On the TI console, we have key combinations like FCTN-S or CTRL-W. The actual detecti ...uppose I want to type an open parenthesis "(". The key scan routine in the TI console expects two keys to be pressed, namely "Shift" and "9". Unfortunate

...m the good old days of the Home Computers. Among them are also a number of TI platforms: * TI-99/2 (24K and 32K ROM version)

This was the second attempt by TI to implement LOGO, a language they had worked on with its inventor Seymour ...e) which works in a defined procedure in LOGO 1 can only be used in direct mode in LOGO 2. Thus one of the sample procedures supplied will not run.

== TI ARTIST format == The TI ARTIST file format actually involves two files, a ''pattern'' and a ''color

The Gram Kracker is a device that is plugged into the cartridge slot of the TI-99/4A. It has a row of flip switches on the from panel, and here we will de ...ridge to disk before we can edit and load them later. We need to start the TI with the Gram Kracker plugged into the console slot, and the cartridge to b

| Scan mode | Scan mode

Classic99 has an interesting quality in that it can read a raw TI file (as binary) from a folder on a PC. It doesn't necessarily require a d * Nearly full emulation of the 9918A including undocumented and illegal mode settings and pixel-accurate sprite collisions

CLR R3 normal mode Similar as with the TI-99/4A device service routine concept (DSR), a Peripheral Access Block (PAB)

'''Advertiser''' or '''Advertizer''' was a very early TI module for the TI99/4. ...France in February 1980 is known, but the module has only been seen with a TI label giving a date of 1981. Only a German language version of the module

TI Sort is a commercial program written by Dennis Faherty. Dennis is the father of Chris Faherty who wrote TI Artist Vn 1 when he was aged 14.

| Clock mode (/Interrupt mode) | Decrementer in event counter mode (0=in timer mode)

The Programmable System Interface (PSI) is a circuit that is used on the TI-99/4A main board, on some expansion cards, and on the Geneve. ...grammable Systems Interface is a multi-purpose circuit that is used in the TI-99/4A and the Geneve computer, and also on some peripheral cards like the C

...grammers and regular users to enjoy the enhanced and improved power of the TI-99/4A, through the use of expanded memory. Yes. Jim Fetzner posted this on the TI mailing list.

Similar as with the TI-99/4A device service routine concept (DSR), a Peripheral Access Block (PAB) While the TI-99/4A DSRs expect the PAB to be stored in VDP RAM, the Geneve OS DSRs use C

...from FUNLWEB 4, do not use the RETURN TO XB option as that only works with TI XB. Instead go to DM1000 and choose the CART RAM option- this will cause MY ...40 column screens use identical commands, except for colour: in 40 column mode text colour is set by using two parameters with CALL SCREEN

Before the TI-99/4a there was the TI-99/4, without the a. TI-99/4 TI-99/4A

! Native mode ! TI mode

...ame on :) One example was all those [[Infocom]] games I ported over to the TI. Other people can probably remember seeing "Broken 19## by The Master" in o ...games with my TI ported versions, which allowed them to be sold legally as TI versions. There were only a limited number sold in this manner.

...ing the dumps of the various memory chips in the system. For the different TI systems, we need a set of ROM contents specific to the respective system. ...as in this screenshot. Scroll down the list of systems until you reach the TI systems. Note that the Geneve is listed far above, at G, of course.

...plugged in, so it appears in position 2, right after the console built-in TI BASIC. == Using TI BASIC ==

TRITON SUPER EXTENDED BASIC amalgamated a number of TI XB mods prepared for Gram device owners. It was supplied on a standard modu ...ting. Graphics can be saved and printed and the format is compatible with TI ARTIST.

Many of the various utilities written for other GRAM devices to add TI BASIC programs to the powerup menu and to add ...he PGRAM resides in the PE box and thus is not affected by what may be the TI system's

...eb editor started life looking like the editor from TI's Word Processor "[[TI Writer]]" and developed from there. M - sets PF to output the file in DisFix/128 TI file format with MS-DOS end of line (cr><lf) separators and (ctrl-Z) end of

Back to [[MESS | TI MESS emulation home page]]. == TI-99/8(e) does not start up ==

...ode. The BASIC code makes CALLS to GPL routines, which can also be used in TI Basic programs when the module is inserted. ...nd the Statistics modules both extend the range of commands available in [[TI BASIC]]. This was not publicised. The term Enhanced Basic was given by Pete

...e 9640''', a complete computer on a card, intended to replace the original TI console. ...e. The single "9" shall keep a little bit of reference to the roots, the [[TI-99/4A]].

All references to TI-99/4A also apply to TI-99/4 unless stated otherwise. ...ym for "Beginner's All-purpose Symbolic Instruction Code.". See articles [[TI BASIC]] and [[Extended BASIC]]

| mostly 0 (Interrupt mode) [[Category:TI-99/4A]]

TI Writer was a text editor using an 80 column wide screen which was windowed ==Facilities (found on TI-Writer)==

Funnelwriter came first as a useful and more powerful option to [[TI Writer]], and this expanded and expanded and became Funnelweb, which is so ==TI Writer Menu==

TI VIDEO DISPLAY PROCESSOR REGISTERS - VDP ...ini Memory]], but is of use to anyone interested in machine code or even [[TI Forth]].

This version log of MAME specifically lists all TI-related changes in the code. | Fixed Geneve GPL mode, fixed status bits (C and OV) for SLA and INV

...means that a '''completely blank HSGPL will not work'''. In that case, the TI system will immediately lock up with a black screen when turned on. The min ...you can dump the contents with your real TI and transfer them to the MAME TI emulation. Otherwise you should get in contact with the SNUG people and ask

...tributed by mizapf 2010). Transfer from the PC through a terminal program, TI-IBM or Magic File Manipulator. By removing the first 128 bytes of the file The card proved to be very reliable, useable with the TI or the Geneve, and very fast due to its improved DMA performance. It is bas

...INTEGER routines which allow you to pack four integers where normally the TI stores one number. This is useful for data packing, but does NOT give the s ...able for any subsequent program you load, OR can be used in direct command mode, so you can type in a program with true lower case on screen.

...for the computer to say, and the ability to use the built in vocabulary in TI Basic programs using CALL SAY. ==Using Speech with TI BASIC==

...on for the novice programmer to the field of data management. Fortunately, TI have provided a fairly simple operating system. ...te control does not function, fit the polarity reverser (provided with the TI Tape Cable) between the remote socket on your tape recorder (the small one:

...ette]] file handling to the much more comfortable disk system. Moreover, [[TI BASIC]] and [[Extended BASIC]] are well prepared for disk usage, so this wa The original floppy disk controller from TI allows to attach up to three double-sided floppy disk drives.

TI FORTH is supplied on a floppy disk and requires a disk system, 32k, and EIT You receive your disk with TI FORTH on it.

...similar to the mechanism used in the TI-99/4A, with the exception that the TI send the odd address byte first, then the even address, and the TMS 9995 st ...tivities. This is another reason why the Geneve is so much faster than the TI, although both use the same clock speed.

...outines I use in my own code, and they mimic the behaviour of the original TI routines, only much much faster, through reduced length and increased effic Hardware: TI-99/4a with 32K Memory Expansion and at least one floppy drive.

Just as TI pulled out of the market, Milton Bradley were producing a peripheral system ...speech could use speech with either the MBX or without the MBX but with a TI speech synth.

...especially shows how a track looks like that is written to the disk in FM mode. There are a lot of additional bytes outside of the sectors which are used Next: Format all 40 tracks. '''Important:''' The TI Floppy Disk Controller has a bug in the format routine at address >442C whe

First TI produced [[TI BASIC]], built into the console. Then came the first attempt at an Extende Very quickly a rewrite was issued. The second version was still called TI Extended BASIC but this time when you used CALL VERsion(A) it returned a va

As it was common with TI application programming, buffers were usually placed statically in the prog ...the availability of the 80386 and newer processors featuring the protected mode that allowed programs to make use of the virtual memory management.

===How can I expand my TI-99/4a?=== ...ht drive bay. A standard/stock PEB would have flex-cable to connect to the TI, a 32k memory card for larger programs, a RS232 card for communications, a