Description: Program Recorder
If you want print, use this line in basic:
100 OPEN #1:"TP",OUTPUT
110 PRINT #1: "ciao"
120 CLOSE #1
Original Concept and Special Tanks To :
My interface is different from all those in circulation, because it only uses 3 chips and not 4 like all !
This interface allows you to connect your European TI-99 / 4A to the TV via the scart. Once the TI-99 / 4A is connected to the TV and turned on, video switching is automatic, the audio output is stereo, as well as the ability to connect to an external amplifier.
Description: SCART Interface V.2.0
This interface allows you to connect your European TI-99 / 4A to the TV via the scart. Once the TI-99 / 4A is connected to the TV and turned on, video switching is automatic, the audio output is stereo, as well as the ability to connect to an external amplifier. The difference to version V.1.0 is the complete compatibility with LCD TV.
This adapter allows you to replace the two PROM U610 and U611 of your TI-99 / 4A with two Eprom 2732s, being easier to find. The adapter can be used in all repairs where you need to replace the Eprom 2532.
My cartridges for TI-99 / 4A
The Texas Instruments SBP0400 (SBP = silicon bipolar), also known as SBC 0400 and X0400, is a microprogrammable 4-bit slice processor that was introduced in 1976 (delivery began in December 1975).It was one of the first VLSI processors and was the first device in the USA based on I²L technology (integrated injection logic). It was used for research and teaching purposes in the aerospace industry (NASA)and in the learning computer LCM-1001 (Texas Instruments, 1976). This microprocessor learning computer was probably the company's first.
In addition to the SBP0400, the learning computer contains a 74279 latch and a rechargeable battery. It is powered by a 7 V power supply unit. It is operated via a total of 20 toggle switches, which are divided into nine micro-operation switches, four data input switches, six control switches and the main switch. The switch position "down" or "left" corresponds to digital "0" or LOW; the position "up" or "right" corresponds to "1" or HIGH. The switch position at "1" is additionally indicated by a red LED lighting up. Nine further LEDs are used as output, four each for data and address, and one for ALUCOUT (ALU carry-out). The commands are entered bit by bit, whereby the 9-bit microinstruction word is divided into four ALU command bits, two target operand and three source operand bits. The least significant bit position (LSB) within each of the three groups is on the right. After each data input or expected output, the "CLOCK" push-button must be pressed to write the command to the command register and increase the command counter.
Depending on the command used, the input is then made via the four data switches. The control switches are: ALUCIN (ripple-carry in), PCPRI (program counter priority, required to turn on the output LEDs on the address bus, PCCIN (program counter carry-in), ENCBY2 (enable program counter increment by a displacement of 1 or 2), POS1, POS0 (most significant, intermediate, or least significant position of the processor slice in a cascade). A DIL-40 socket serves as an optional extension by three further modules of the LCM-1000 series or own modules. The pin assignment is identical to that of the SBP0400 (power supply at the second INJECTOR pin - pin 40).
LCM-1001 base device ($ 149,95)
LCM-1002 controller module for micro programming with 256×20 bit PROM ($ 189,95)
LCM-1003 memory module containing 1024 12-bit words ($ 189,95)
LCM-1004 input/output module ($ 109,95)
Home Computer TI-99/4A
Price: US$525 (without monitor)
How many:2.8 Million
CPU:TI TMS9900, 3MHz
Memory:16K RAM, 26K ROM
Sound: 3: channels + effect
Display:Video via an RF modulator 32 characters by 24 lines text 192 X 256, 16 color graphics
Ports:ROM cartridge (on front) Data storage cassette Audio/Video output Joystick input CPU bus expansion
Peripherals:Speech Synthesizer Peripheral Expansion Box Data storage cassette 300 baud modem
TI99-4A Main BOARD
|1||TMS9900 CPU central process unit|
|2||TMS9918A VDP video display processor|
|3||TMS9901 HW Interface|
|4||Grom Chips CD2155/CD2156/CD2157|
|5||TMS9919/SN94624 Sound Chips|
|6||8 x TMS4116 RAM Chips|
|7||TMS9904 Clock Generator|
|8||2 x 4k ROM chips (1501392-26)|
|9||2 x 128 byte MCM6810P Scratch-pad RAM|
|10||Command Module Connector ( cartridges )|
TEXAS Instruments, a leader in mathematics education and inventor of the integrated circuit has transformed the world over the past 60 years, he has produced the new Execulator built with renewable materials, uses no batteries, solar cells, silicon, display, completely bio-degradable.
Execulator performs addition, subtraction, multiplication, and even divisions. Unfortunately, the calculations with the% are not supported, but has a constant memory, remember.
The operation is simple Execulator developed for right-handed and left-handed, for the latter it takes a bit of experience.
Texas Instruments, leader nell' educazione della matematica e inventore del circuito integrato ha trasformato il mondo negli ultimi 60 anni, ha prodotto il nuovo Execulator, costruito con materiali rinnovabili, non utilizza batterie, ne celle solari, ne silicio, ne display, completamente bio-degradabile .
Execulator esegue addizione, sottrazione, moltiplicazione, e anche le divisioni. Purtroppo, i calcoli con la percentuale % non sono supportati, ma può utilizzare la memoria costante.
Il funzionamento è semplice, Execulator può essere utilizzato sia da destri che da mancini, per quest' ultimi ci vuole un pò di pratica
Model: Portable Professional Computer (PPC) Color Version
Adapter: 110 volt
Keyboard: QWERTY full-stroke keyboard with arrow keys and separated numeric keypad
Cpu: Intel 8086 Speed: 5 mhz CO-processor: 8087
Ram: 64k (up to 768k) Sound: Beeper
Text mode: 80 x 25 Graphics mode: 720 x 300
Size - Weight: 47 x 42 x 19 cm / 12 kg with the monochrom monitor / 14 kg with the color monitor
I/O ports: Parallel/Centronics port, 5 expansion slots (non IBM compatible), 4 x serial ports
Media: two 5''1/4 disk-drive (320k)
OS: MS-DOS 2.1 CP/M 86, UCSD P-system, Prologue and Concurrent CP/M 86.
Peripherals: 10Mb or 20Mb hard-drive ( need interface), RAM expansion cards, Voice recognition card, Ethernet card.
Price: 64k model about 3000$ (USA, november 1983) / 64k model : £ 4.000.000 (Italy, 1985)