Solid State Software Command Module

Car Wars 1981 Solid State Sofware^TM Command Module

The software cartridges used on the TI 99/4A are called Solid State Software^TM Command Modules. Many of the most popular programs for the TI 99-/4A were distributed using these cartridges (for example Parsec, Car Wars, TI Invaders, Hunt the Wumpus, The Attack, Tombstone City, etc). Unlike floppy disks, however; Solid State Software^TM Command Modules lack the ability to save program information.
Solide State Software^TM Command Modules were snapped into place in the provided slot on the top, right-hand side of the TI-99/4A. They were meant to be inserted or removed only when power to the computer was off. Doing otherwise would often result in system instability or crashes.
Below find a fairly comprehensive list of Solid State Software^TM Command Modules which were produced for the TI-99/4A (if you are aware of any I missed, please let me know in the talk page of this article):

Solid State Software^TM Command Modules List

Cartridge Title	Publisher	Year	Part Number	Rarity
4A Flyer	Triton	1986	TRI-BDAF	Common
99 Home Sentry	Corcomp	1986	QGAG	Very Rare
Accounting Assistant	Scott Foresman	1981	SF30429	Very Rare
Activity Accountant	Scott Foresman	1981	SF30428	Very Rare
Addition	Texas Instruments	1982	PHM 3090	Unknown
Addition and Subtraction 1	Scott Foresman	1981	PHM 3027	Common
Addition and Subtraction 2	Scott Foresman	1981	PHM 3028	Very Common
Addition and Subtraction 3	Scott Foresman	1984	SF 30226	Unknown
Adventure	Adventure International	1981	PHM 3041	Common
Alien Addition	Texas Instruments	1982	PHM 3115	Common
Alligator Mix	Texas Instruments	1982	PHM 3114	Uncommon
Alpiner	Texas Instruments	1982	PHM 3056	Very Common
A-MAZE-ING	Texas Instruments	1980	PHM 3030	Common
Ambulance	Funware	1983	FW 1005	Rare
Angler Dangler	Data East	1983	PHM 3167	Never Released
Ant Colony	Funware	1983	99ERD11	Never Released
Anteater	Romox	1983	99ERD11	Rare
Arcturus	Exceltec	1985	STA 103	Very Rare
Astroblitz	Funware	1983	N/A	Never Released
Astrochase	Parker Brothers	1983	N/A	Never Released
Astro Fighter	Data East	1983	N/A	Never Released
Attendance Recorder	Scott Foresman	1982	SF 30420	Very Rare
Barrage	Sofmachine	1983	TRI-BAAX	Uncommon
Battlestar Galactica	Texas Instruments	1983	PHM 3124	Never Released
Battlezone	Atarisoft	1983	RX 8546	Never Released
Beyond Parsec	DataBioTics	1988	TRI-BDAP	Rare
Bigfoot (MBX)	Milton Bradley MBX	1983	PHM3151	Uncommon
Black Hole	DataBioTics	1983	TRI-BABD	Uncommon
Blackjack and Poker	Texas Instruments	1980	PHM 3033	Common
Blasto	Milton Bradley	1980	PHM 3032	Very Common
Boxer	DaTaBioTics	1989	TRI-2007	Very Rare
Break Thru!!	DaTaBioTics	1989	TRI-2006	Rare
Buck Roger: Planet of Zoom	Sega Enterprises	1983	PHM 3226	Rare
Burger Builder	DaTaBioTics	1983	TRI-BAAY	Uncommon
Bugertime	Data East USA	1983	PHM 3233	Common
Cannonball Blitz	Sierra On-Line	1984	ROM 06062	Very Rare
Car Wars	Texas Instruments	1981	PHM 3054	Very Common
Card Sharp	Milton Bradley	1979	N/A	Never Released
Cave Creatures	Funware	1983	ROM 08185	Very Rare
Centipede	Atarisoft	1983	RX8503	Uncommon
Championship Baseball (MBX)	Milton Bradley	1983	PHM 3148	Uncommon
Championship Football (MBX)	Milton Bradley	1983	N/A	Never Released
Championship Tennis (MBX)	Milton Bradley	1983	N/A	Never Released
Changes	Tigervision	1984	7-013-99	Never Released
Character Crayons	Romox	1984	ROM 07025	Very Rare
Chicken Coop	Navarone	1986	TRI-BAAH	Uncommon
Chisolm Trail	Texas Instruments	1982	PHM 3110	Very Common
Choplifter!	Br0aderbund	1983	PHM 3159	Very Rare
Class Data Recorder	Scott Foresman	1981	SF 30421	Very Rare
Computer Math Games I	Texas Instruments	1983	PHM 3084	Very Rare
Computer Math Games II	Texas Instruments	1982	PHM 3083	Uncommon
Computer Math Games III	Texas Instruments	1983	PHM 3085	Very Rare
Computer Math Games IV	Texas Instruments	1983	PHM 3086	Uncommon
Computer Math Games VI	Texas Instruments	1982	PHM 3088	Unknown
Computer War	Thorn EMI Video	1983	THA 32002	Uncommon
Congo Bongo	Sega Enterprises	1983	PHM 3227	Uncommon
Connect Four	Milton Bradley	1980	PHM 3038	Very Common
Course Manager	Scott Foresman	1981	SF 30448	Very Rare
Crisis Mountain	Funware	1983	N/A	Never Released
Crossfire	Sierra On-Line	1983	PHM 3207	Never Released
DBM System v2.0	Navarone	1984	NAV114	Rare
David's Midnight Magic	Br0aderbund	1983	N/A	Never Released
Decimals	Texas Instruments	1982	PHM 3096	Uncommon
Decimals 1	Scott Foresman	1983	SF 30229	Unknown
Decimals 2	Scott Foresman	1983	SF30244	Rare
Defender	Atarisoft	1983	RX8506	Very Common
Demolition Division	Texas Instruments	1982	PHM 3116	Common
Demon Attack	Imagic	1983	PHM 3219	Unknown
Demonstration	Texas Instruments	1979	PHM 3001	Rare
Diagnostic	Texas Instruments	1979	PHM 3000	Very Rare
Dig Dug	Namco & Atarisoft	1982	RX8509	Rare
Disk Fixer v2.0	Navarone	1984	PHM 3019	Unknown
Disk Manager	Texas Instruments	1980	Unknown	Uncommon
Disk Manager 2	Texas Instruments	1982	PHM 3089	Uncommon
Disk Manager v3.0	Texas Instruments	1983	Unknown	Unknown
Division	Texas Instruments	1982	PHM 3093	Uncommon
Division 1	Scott Foresman	1982	SF30210	Very Rare
Donkey Kong	Atarisoft	1983	RX8512	Uncommon
Dragon Mix	Texas Instruments	1982	PHM 3117	Common
Dragonflyer	DataBioTics	1988	TRI-BAAW	Rare
Driving Demon	Funware	1983	FW1008	Very Rare
D-Station	DataBioTics	1988	Unknown	Very Rare
D-Station II	DataBioTics	1988	Unknown	Rare
Dunjeonlord	Futuresoft	1983	N/A	Never Released
Early Learning Fun	Texas Instruments	1982	PHM 3002	Very Common
Early Logo Learning Fun	Texas Instruments	1982	PHM 3144	Uncommon
Early Reading	Texas Instruments	1980	PHM 3015	Uncommon
Editor/Assembler	Texas Instruments	1981	PHM 3055	Common
Edu-Pack	Asgard	1990	ASGEDO1B	Very Rare
Escape!	Cydex	1984	TRI-2005	Very Rare
Espial	Tigervision	1984	7-012-99	Very Rare
E.T. The Extra-Terrestrial	Texas Instruments	1983	PHM 3125	Never Released
Extended Basic II Plus	Mechatronic	1985	Mechatronic	Unknown
Extended Basic v100	Texas Instruments	1982	PHM 3026	Uncommon
Face Chase	Exceltec	1985	STA-110	Rare
Facemaker	Spinnaker	1983	PHM 3177	Uncommon
Fantasy	SNK Electron.	1983	N/A	Never Released
Fathom	Imagic	1983	PHM 3222	Uncommon
Football	Texas Instruments	1979	PHM 3009	Common
Fractional Numbers	Texas Instruments	1982	PHM 3095	Uncommon
Fractions 1	Scott Foresman	1982	SF30220	Uncommon
Fractions 2	Scott Foresman	1983	SF30238	Unknown
Frog Jump	Scott Foresman	1982	SF31177	Uncommon
Frog Stickers	Navarone	1986	TRI-BAAG	Rare
Frogger	Parker Brothers	1984	PB1610	Uncommon
Fun With Music	Epyx	1983	N/A	Never Released
Galactic Barrier	Funware	1983	N/A	Never Released
Galaxian	Sega	1979	N/A	Never Released
Gamevision Demonstration Module	Milton Bradley	1979	N/A	Never Released
Gateway to Apshai	Epyx	1983	N/A	Never Released
Germ Patrol	Texas Instruments	1984	Unknown	Very Rare
Green Muck (MBX)	Milton Bradley	1983	N/A	Never Released
Hangman	Milton Bradley	1981	PHM 3037	Common
Hen Pecked	Romox	1983	99ERD12	Rare
Henhouse	Funware	1983	FW1001	Rare
Herbie Rides Again	Disney	1984	N/A	Never Released
Home Financial Decisions	Texas Instruments	1978	PHM 3006	Very Common
Home Helper Plus	Navarone	1984	AS-04	Rare
Honey Hunt (MBX)	Milton Bradley	1983	PHM 3156	Common
Hopper	Texas Instruments	1983	PHM 3229	Common
Household Budget Management	Texas Instruments	1979	PHM 3007	Very Common
Hunt the Wumpus	Texas Instruments	1980	PHM 3023	Very Common
Hustle	Texas Instruments	1980	PHM 3034	Very Common
I'm Hiding (MBX)	Milton Bradley	1983	PHM 3155	Common
Individual Accounting	Texas Instruments	1982	PHM 3066	Very Rare
Indoor Soccer	Texas Instruments	1981	PHM 3024	Common
Integers	Texas Instruments	1982	PHM 3094	Common
Jawbreaker II	Sierra On-Line	1983	PHM 3194	Very Common
Joust	Atarisoft	1984	RX8525	Very Rare
Jumpan Junior	Epyx	1983	148-436	Never Released
Jumpy	DataBioTics	1983	TRI-BAAZ	Rare
Jungle Hunt	Taito / Atarisoft	1982	RX8528	Uncommon
Junkman Junior	DataBioTics	1984	TRI-BAAM	Uncommon
Key to Spanish	Texas Instruments	1983	PHM 3126	Unknown
Keystone Kapers	Activision	1983	N/A	Never Released
Killer Caterpillar	Norton Soft	1984	TRI-GBAA	Very Rare
King of the Castle	Navatone	1986	TEN42067	Rare
Lasso	SNK Electronics	1983	N/A	Never Released
Laws of Arithmetic	Texas Instruments	1982	PHM 3099	Uncommon
Link v0.99	Asgard	1992	H9115	Very Rare
Lobster Bay	Funware	1983	N/A	Never Released
Lode Runner	Broaderbund	1983	N/A	Never Released
Love Tennis	Exceltec	1985	Unknown	Rare
Lunar Outpost	Epyx	1983	N/A	Never Released
M*A*S*H	20th Century	1983	PHM 3158	Common
Mail Drop (MBX)	Milton Bradley	1983	N/A	Never Released
Mancala	DataBioTics	1983	TRI-2002	Rare
Measurement Formulas	Texas Instruments	1982	PHM 3101	Common
Meteor Belt (MBX)	Milton Bradley	1983	PHM 3152	Common
Meteor Multiplication	Texas Instruments	1982	PHM3119	Common
Micro Pinball	DataBioTics	1984	TRI-BADE	Uncommon
Micro Tennis	DataBioTics	1983	TRI-BDAQ	Uncommon
Microsoft Multiplan	Microsoft/Texas Instruments	1981	PHM 3113	Uncommon
Microsurgeon	Imagic	1983	PHM3220	Common
Midnite Mason	DataBioTics	1982	TRI-BADF	Rare
Milton Bradley Gamevision	Milton Bradley	1979	MB 4964	Rare
Mind Challengers	Texas Instruments	1980	PHM 3025	Common
Miner 2049er	Tigervision	1983	7-009-99	Rare
Mini Memory	Texas Instruments	1981	PHM 3058	Uncommon
Miniwriter II+	DataBioTics	1986	TRI-BJBZ	Rare
Miniwriter III+	DataBioTics	1986	TRI-BJBY	Rare
Minus Mission	Texas Instruments	1982	PHM 3118	Very Common
Mists of Venus	Futuresoft	1983	N/A	Never Released
Moon Patrol	Atarisoft	1982	RX8531	Uncommon
Moonmine	Texas Instruments	1983	PHM 3131	Uncommon
Moonsweeper	Imagic	1983	PHM 3224	Uncommon
Mouse Attack	Sierra Online	1983	PHM 3208	Never Released
Ms. Pac-Man	Atarisoft	1983	RX8543	Rare
Multiplication	Milliken	1982	PHM 3092	Very Rare
Multiplication 1	Scott Foresman	1981	SF 30207	Very Rare
Multiplication 1	Scott Foresman	1981	PHM 3029	Very Common
Multiplication 2	Scott Foresman	1983	SF 30223	Very Rare
Munchman	Texas Instruments	1982	PHM 3057	Very Common
Munchman II	John Phillips	1987	TRI-BDAG	Very Rare
Munchmobile	SNK Electronics	1983	PHM 3146	Common
Music Maker	Texas Instruments	1980	PHM 3020	Uncommon
Myarc Extended Basic II	Myarc	1985	N/A	Extremely Rare
Nam	Futuresoft	1983	N/A	Never Released
Navarone DBMS	Navarone Industries	1984	N/A	Never Released
Number Bowling	Scott Foresman	1983	SF 31189	Rare
Number Bowling/Space Journey	Scott Foresman	1983	SF 30306	Very Rare
Number Magic	Texas Instruments	1979	PHM 3004	Common
Number Readiness	Texas Instruments	1982	PHM 3098	Uncommon
Numeration 1	Scott Foresman	1983	PHM 3050	Very Rare
Numeration 2	Scott Foresman	1983	SF 30216	Very Rare
Numeration 2	Scott Foresman	1983	PHM 3051	Very Rare
Othello	CBS Video	1982	PHM 3067	Common
Pac-Man	Atarisoft	1983	RX8500	Rare
Paint 'n' Print	Navarone Industries	1985	TRI-BACA	Very Rare
Paint 'n' Print	Navarone Industries	1986	TRI-BACD	Very Rare
Paint 'n' Print	Navarone Industries	1986	TRI-BACE	Very Rare
Paraprint	DaTaBioTics	1986	TRI_WABV	Very Rare
Parsec	Texas Instruments	1982	PHM 3112	Very Common
Payroll Assistant	Scott Foresman	1982	SF 30426	Very Rare
Percents	Texas Instruments	1982	PHM 3097	Uncommon
Peripheral Diagnostic Module	CorComp	1986	TRI-YKAL	Very Rare
Personal Real Estate	Texas Instruments	1981	PHM 3022	Very Common
Personal Record Keeping	Texas Instruments	1979	PHM 3013	Very Common
Personal Report Generator	Texas Instruments	1982	PHM 3044	Very Common
Personal Data Recorder	Scott Foresman	1981	SF 30427	Very Rare
Peter Pan Space Odyssey	Walt Disney	1984	PHM 3132	Never Released
Physical Fitness	Texas Instruments	1978	PHM 3010	Very Common
Picnic Paranoia	Atarisoft	1984	RX8517	Very Common
Picture Parts	Scott Foresman	1983	SF 31180	Uncommon
Pinocchio's Great Escape	Walt Disney	1984	PHM 3135	Never Released
PIO Plus Printer Interface	CorComp	1988	TRI-YKAW	Very Rare
Pipes	Funware	1983	FW100?	Never Released
Pitstop	Epyx	1983	N/A	Never Released
Plato Interpreter	Control Data	1983	PHM 3122	Very Rare
Pole Position	Namco/Atarisoft	1983	RX8534	Uncommon
Popeye	Parker Brothers	1984	PB1650	Rare
Princess and the Frog	Romox	1982	99ERD12	Rare
Pro-Typer	DaTaBioTics	1987	TRI_BABG	Very Rare
Program Manager 6000+	Pilgrims Pride	1986	N/A	N/A
Property Manager	Scott Foresman	1981	SF 30431	Very Rare
Protector II	Atarisoft	1983	RX8516	Common
Pyramid Puzzler	Scott Foresman	1983	SF 31186	Very Rare
Pyramid Puzzler/Star Maze	Scott Foresman	1983	SF 30304	Very Rare
Q*bert	Parker Brothers	1984	PB1620	Rare
QMaze	DaTaBioTics	1988	TRI-BAAZ	Very Rare
Qubic	Sunware	N/A	STA 104	Never Released
Rabbit Trail	Funware	FW1004	1983	Very Rare
Rat Hotel	Funware	N/A	1983	Never Released
Reading Adventures	Scott Foresman	1983	SF 30117	Rare
Reading Cheers	Scott Foresman	1983	SF 30115	Rare
Reading Flight	Scott Foresman	1982	PHM 3082 / SF 30122	Rare
Reading Fun	Scott Foresman	1982	PHM 3043 / SF 30114	Rare
Reading On	Scott Foresman	1982	SF 30116 / PHM 3046	Rare
Reading Powers	Scott Foresman	1982	SF 30121	Very Rare
Reading Rainbows	Scott Foresman	1982	SF 30113	Very Rare
Reading Rally	Scott Foresman	1982	SF 30120 / PHM 3048	Rare
Reading Roundup	Scott Foresman	1982	SF 30118 / PHM 3047	Very Rare
Reading Trail	Scott Foresman	1982	SF 30119	Very Rare
Reading Wonders	Scott Foresman	1982	SF 30123	Very Rare
Red Baron Flight Simulator	DaTaBioTics	1988	TRI-BADH	Very Rare
Return to Pirate's Isle	Scott Adams	1984	PHM 3189	Rare
River Rescue	Unknown	1983	Thron-EMI	Never Released
Robotron: 2084	Atarisoft	1983	RX 8519	Very Rare
Rotor Raiders	Romox	1984	ROM6025	Very Rare
Salary Planner	Scott Foresman	1981	SF 30430	Very Rare
Schachmeister	Texas Instruments	Unknown	PHM 3008	Unknown
Schnoz-Ola	Funware	1983	PP871206	Very Rare
Scrabble	Texas Instruments	1983	Unknown	Never Released
Scraper Caper	Tigervision	1984	7-010-99	Never Released
Scholastic Spelling-Level 3	Scholastic Inc.	1982	PHM 3059	Very Rare
Scholastic Spelling-Level 4	Scholastic Inc.	1982	PHM 3060	Very Rare
Scholastic Spelling-Level 5	Scholastic Inc.	1982	PHM 3061	Very Rare
Scholastic Spelling-Level 6	Scholastic Inc.	1982	PHM 3062	Very Rare
School Mailer	Scott Foresman	1981	SF 30423	Very Rare
Search Master	Sunware	1985	STA 102	Very Rare
Securities Analysis	Texas Instruments	1979	PHM 3012	Uncommon
Sewermania (MBX)	Milton Bradley	1984	PHM 3150	Very Rare
Shamus	Atarisoft	1983	RX 8518	Common
Slymoids	Texas Instruments	1984	PHM 3197	Uncommon
SMU Electronic Engineering Library	Texas Instruments	1982	PHM 3045	Very Rare
Sneggit	Texas Instruments	1983	PHM 3145	Common
Soccer-Hallenfutball	Texas Instruments	1981	PHM 3024	Very Rare
Sorgan II	DaTaBiotics	1988	TRI-BDAU	Very Rare
Soundtrack Trolley (MBX)	Milton Bradley	1983	PHM 3157	Very Rare
Space Bandits (MBX)	Milton Bradley	1983	PHM 3149	Rare
Space Chase	Exceltec	1985	N/A	Never Released
Space Journey	Scott Foresman	1983	SF 31192	Very Rare
Space Patreol	Exceltec	1985	STA 105	Very Rare
Speech Editor	Texas Instruments	1979	PHM 3011	Very Rare
Speed Reader Adult	Navarone	1984	TRI-BABB	Very Rare
Speed Reader Children	Navarone	1984	TRI-BABA	Very Rare
Spot-Shot	DataBioTics	1987	TRI-BAAW	Very Rare
Springer	Tigervision	1983	7-006-99	Never Released
Spy's Demise	DaTaBioTics	1987	TRI-BABC	Very Rare
St. Nick	Funware	1983	FW 1009	Very Rare
Star Gazer I	John Phillips	1984	TRI-BBBA	Very Rare
Star Gazer II	John Phillips	1984	TRI-BBBB	Very Rare
Star Gazer III	John Phillips	1984	TRI-BBBC	Very Rare
Star Gazer I, II, III	1984	John Phillips	TRI-BABF	Very Rare
Stargate	1983	Atarisoft	RX 8522	Never Released
Star Maze	1983	Scott Foresman	SF 31182	Very Rare
Star Runner	1987	DaTaBioTics	TRI-BAAP	Very Rare
Star Trap	1985	Exceltec	Unknown	Very Rare
Star Trek	1983	Sega Enterprises	PHM 3225	Common
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References

• Mainbyte's Command Module Listing
• Moby Games: Videogamehouse.com TI-99/4A's Video Game Cartridge Rarity List
• Rediware's TI-99 Rarity List
• Videogame House: TI-99/4A Game Cartridge Rarity List