Tandy 1400LT - 1-4 Hardware Specifications

1-4 Hardware Specifications
CPU
CPU CLOCK
RAM
Capacity
Device
ROM
DISPLAY
Control Device
Graphic Resolution
Character Display
Display Devices
Display Control
Video RAM
Character Generator
Base System Display Device
Effective Display Area
KEYBOARD
Number of Keys
FDD
Floppy Disk Driver
Number of Tracks
Dimensions
Weight
Operating Voltage
Power Consumption
Rotating Speed
Encoding Method
Capacity
NEC V20 (pPD70108)
4.77/7.16 MHz selectable.
768Kbyte
lMbit type DRAM (256Kbit by 4) 40000H
- 9FFFFH and
DCOOOH
- FBFFFH addresses are selectable, enable and disable
with DIP Switches.
All memory data is lost when the Main Power is OFF.
Minimum 16Kbyte
V6355 LCD Controller
640
* 200 dots.
80 Characters
X 25 lines
(or 40 Characters
X 25 lines)
Following devices can be used
1. Super twist nematic LCD panel with EL back light.
2. CRT with IRGB input.
3. CRT with NTSC not color COMPOSITE input
Basically conforms to IBM-CGA
16Kbyte (64Kbit type SRAM
X 2)
Character ROM
is used for the character display mode.
Consists of STN LCD panel with EL back light. (640*200 dots).
The time sharing gradation system enables
8 gradation displays.
In addition, the display can be switched to the CRT by software
and or monitor switch. (IRGB CRT and or NTSC Composite
CRT)
9.45"
X 4.13" (239.96mm X 104.95mm)
Dot size
- 0.335mm X 0.475mm
Dot pitch
- 0.375mm X 0.525mm
Aspect -1
: 1.4
76 keys(8
X 10 key matrix)
OPDB-12A (CITIZEN)
Double-Side Double-Density 3.5-inch FDD. Front loading.
80
4"
X 5.9" X 1" (101.6mm X 150mm X 25.4mm)
About llb. (450g)
Read(Write)
- 1.8W Typical
Stand by
- 32.5mW Typical
Seek
- 6.5W Typical
300 RPM
MFM
Unformatted
- lOOOKbyte
Formatted per disk
- 655.4Kbyte (16 Sector/Track )
- 737.2Kbyte ( 9 Sector/Track )
- 819.2Kbyte ( 5 Sector/Track )
4.4 - 6.0V
1-7