Toshiba 386SX, AR-B1376 Printer Status Buffer, Printer Control Latch & Printer Control Swapper

Page 17

AR-B1375/AR-B1376 User s Guide

(4) Printer Status Buffer

The system microprocessor can read the printer status by reading the address of the Printer Status Buffer. The bit definitions are described as follows:

7

 

6

5

4

3

2

 

1

 

0

 

 

 

 

 

 

 

 

 

 

X

 

X

 

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-ERROR SLCT PE -ACK -BUSY

Figure 2-2 Printer Status Buffer

NOTE: X presents not used.

Bit 7: This signal may become active during data entry, when the printer is off-line during printing, or when the print head is changing position or in an error state. When Bit 7 is active, the printer is busy and cannot accept data.

Bit 6: This bit represents the current state of the printer’s ACK signal. A0 means the printer has received the character and is ready to accept another. Normally, this signal will be active for approximately 5 microseconds before receiving a BUSY message stops.

Bit 5: A1 means the printer has detected the end of the paper.

Bit 4: A1 means the printer is selected.

Bit 3: A0 means the printer has encountered an error condition.

(5) Printer Control Latch & Printer Control Swapper

The system microprocessor can read the contents of the printer control latch by reading the address of printer control swapper. Bit definitions are as follows:

7

 

6

5

4

3

2

 

1

 

0

 

 

X

 

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

STROBE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AUTO FD XT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INIT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SLDC IN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IRQ ENABLE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DIR(write only)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 2-3 Bit’s Definition

NOTE: X presents not used.

Bit 5: Direction control bit. When logic 1, the output buffers in the parallel port are disabled allowing data driven from external sources to be read; when logic 0, they work as a printer port. This bit is write only.

Bit 4: A1 in this position allows an interrupt to occur when ACK changes from low state to high state.

Bit 3: A1 in this bit position selects the printer.

Bit 2: A0 starts the printer (50 microseconds pulse, minimum).

Bit 1: A1 causes the printer to line-feed after a line is printed.

Bit 0: A0.5 microsecond minimum highly active pulse clocks data into the printer. Valid data must be present for a minimum of 0.5 microseconds before and after the strobe pulse.

2-9

Page 16 Page 18
Image 17
Page 16 Page 18
Contents 386SX CPU Card Page Table of Contents Specifications & SSD Types Supported Bios ConsoleUsing Memory Banks Placement & Dimensions Programming RS-485 & IndexPreface Organization Static Electricity PrecautionsPacking List OverviewIntroduction Features Microprocessor System ControllerDMA Controller DMA ControllerInterrupt Controller Keyboard Controller2 I/O Channel Pin Assignment Bus 1 I/O Port Address MapHex Range Device I/O Port Address MapI/O Channel Pin Assignments REAL-TIME Clock and NON-VOLATILE RAM TimerAddress Description Real-Time Clock & Non-Volatile RAMSerial Port Interrupt Enable Register IERReceiver Buffer Register RBR Transmitter Holding Register THRModem Control Register MCR Line Control Register LCRLine Status Register LSR Modem Status Register MSRDivisor Latch LS, MS Parallel PortRegister Address Printer Interface LogicPrinter Control Latch & Printer Control Swapper Error Slct PE -ACK -BUSYPrinter Status Buffer Page Overview Setting UP the SystemKeyboard Connector System SettingPin Mini DIN Keyboard Connector CN3 AUX. Keyboard Connector J4Pin PC/104 Connector Bus a & B CN2 2 PC/104 ConnectorPin PC/104 Connector Bus C & D CN1 Name Description O Channel Signal DescriptionI/O Channel Signal’s Description Hard Disk IDE Connector CN4Pin Signal HDD Pin AssignmentCN6 FDD Port Connector CN5Parallel Port Connector CN6 RS-232/RS-485 Select for COM-B JP2 Serial PortRS-485 Terminator JP7 External RS-485 Adapter Select J6 & J7RS-232 Connector CN7 & DB2 Reset Header J1External Power LED Header J2 LED HeaderExternal Battery Power Connector J3Battery Charger Select JP3 External Speaker Header J5External Battery Connector J11 Dram ConfigurationCPU Base Clock Select JP1 SIMM1 SIMM2VGA Setting JP5 Connecting the CRT MonitorCRT/LCD Flat Panel Display IRQ 9 Used SelectLCD Flat Panel Display CRT Connector DB1DE/E Signal from M or LP Select JP6 JP6 LCD ConnectorLCD Control Connector CN9 Inverter Board DescriptionSupported LCD Panel LCD Panel Display Connector CN8LCD Display Assignment Manufacture Model No DescriptionUtility Diskette InstallationWIN 3.1 Driver VGA DriverWIN 95 Driver StepSSD Utility RFG.EXE RFGDEMO.PGF Write Protect FunctionDisable the Software Write Protect Enable the Software Write ProtectHardware Write Protect Software Write ProtectWatchdog Timer Setting Watchdog TimerTime-Out Setting LEDWatchdog Timer Disabled Watchdog Timer EnabledWatchdog Timer Trigger Solid State Disk Switch Setting2 I/O Port Address Select SW1-1 OverviewSSD Firmware Address Select SW1-2 DEVICE=C\DOS\EMM386.EXE X=C800-C9FFFlash Eprom Sram SSD Drive Number SW1-3 & SW1-4Simulate 2 Disk Drive Disk Drive Name Arrangement ROM Type Select SW1-5 & SW1-6M1~M3 & JP4 Memory Type Setting Jumper SettingUV Eprom 27Cxxx ROM Disk InstallationSwitch and Jumper Setting JP4 Large Page 5V Flash DiskSoftware Programming \PGM137X ROM pattern file name Small Page 5V Flash ROM Disk Using Tool ProgramRAM Disk Typing DOS Command\FORMAT RAM disk letter /U Combination of ROM and RAM DiskPage Bios Setup Overview Bios ConsoleDate & Time Setup Standard Cmos SetupFloppy Setup Hard Disk SetupAdvanced Cmos Setup Wait for ‘F1’ If Error Password CheckHard Disk Delay System KeyboardAdvanced Chipset Setup Setting Password Password SettingPassword Checking Load Default SettingBios Exit Auto Configuration with Fail Safe SettingSave Settings and Exit Bios UpdateFile of AMIFLASH.EXE had to Version SSD Types Supported Specifications & SSD Types SupportedSpecifications SST AtmelWinbond FujitshuRegister Port Using Memory BanksCS1 CS0 SocketPage Placement Placement & DimensionsDimensions Programming RS-485 Programming RS-485 & IndexInitialize COM port Send out one character TransmitPrint #1, OUTCHR$ OUT &H3FC, INP%H3FC and &HFA ReturnOUT &H3FC, INP&H3FC and &HEF Return INPSTR$ ReturnName Function

386SX, AR-B1376, AR-B1375 specifications

The Toshiba AR-B1375 and AR-B1376 are notable embedded computing solutions that incorporate the 386SX microprocessor architecture. Designed for various applications, these models focus on reliability, performance, and versatility, making them appealing choices for system integrators and developers.

At the core of the AR-B1375 and AR-B1376 is the Intel 386SX microprocessor. This landmark processor marked a significant advancement in computing technology, introducing a 32-bit architecture while maintaining compatibility with 16-bit applications. The 386SX is known for its efficient processing capabilities, offering both multitasking support and enhanced memory management. It operates at clock speeds ranging typically from 16 MHz to 25 MHz, contributing to its effectiveness in running industrial applications.

One of the key features of the AR-B1375 and AR-B1376 systems is their modular architecture, which allows for easy customization and expansion. This modularity means users can tailor the hardware according to specific requirements, making it suitable for a wide range of applications such as automation, telecommunications, and embedded systems.

Both models support various I/O options, ensuring seamless integration with peripherals and external devices. They typically come equipped with serial and parallel ports, as well as support for modern interfaces like USB. The systems also feature onboard expansion slots, enabling the addition of further functionality, such as additional memory or specialized processing units.

In terms of memory, the AR-B1375 and AR-B1376 support a range of RAM configurations, allowing users to scale their systems based on the application demands. The inclusion of EPROM and EEPROM options also facilitates easy updates and programmability, which is crucial for embedded systems that often require firmware adjustments over time.

Moreover, these models are known for their robust thermal management features, which are essential in industrial environments where conditions can be harsh. This capability ensures stable performance and longevity, reducing the risk of system failures due to overheating or environmental factors.

To summarize, the Toshiba AR-B1375 and AR-B1376, coupled with the 386SX microprocessor, offer a blend of performance, flexibility, and reliability. Their modular design, extensive I/O support, and memory scalability make them ideal for a variety of embedded computing applications, placing them as commendable options in the world of industrial computing solutions. These systems not only exemplify Toshiba's commitment to innovation but also contribute significantly to the functionality of embedded technologies in a rapidly evolving industry.
Top Page Image Contents