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1983 8-bit computer from Toshiba From Wikipedia, the free encyclopedia
Toshiba Pasopia 7 (also known as PA7007) is a computer from manufacturer Toshiba, released in 1983 and only available in Japan, with a price of $1350.[1][2][3][4][5]
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| Also known as | PA7007 |
|---|---|
| Type | Home computer |
| Release date | 1983 |
| Introductory price | $1350 |
| Operating system | T-BASIC7, CP/M optional |
| CPU | Zilog Z80A |
| Memory | 64 KB RAM 48 KB VRAM |
| Graphics | 320 x 200 / 640 x 200 |
| Sound | Texas Instruments SN76489, 6 voices, 5 octaves |
| Predecessor | Toshiba Pasopia |
| Related | Pasopia 700, Toshiba Pasopia 5 |
It was intended as the successor of the Toshiba Pasopia, offering improved sound and graphics. The machine is partially compatible with the original Pasopia, and supports connecting cartridge-type peripherals.
Graphic memory is increased to 48 KB and two SN76489 sound chips are available, producing six five-octave channels and two noise channels.[6]
A new version of the operating system, T-BASIC7, is also available.[7] This version is based on Microsoft BASIC and adds specific commands for this model, such as higher numerical precision or support for extra colors.
Available peripherals for the Pasopia 7 are a 5" disk drive, a Chinese characters ROM, a RS-232 interface and a printer. The keyboard is full-stroke JIS standard, with a separate numeric keypad and some function keys.[8][6]
After 1988, some Pasopia 7 computers were donated to other countries (ex: Poland) under the "International Development of Computer Education Program".[4][5]
Released in 1985, the Pasopia 700[9] is based on the Pasopia 7, and was intended as a home learning system developed by Toshiba and Obunsha. Two disk-drives were added to the side of the main unit and the keyboard is separate. This machine has two cartridge slots (one at the front).
The Pasopia 7 uses hardware dithering to simulate intermediate color intensities, based on a mix of two of eight base RGB colors displayed using the 640 x 200 resolution. This allows the machine to display a maximum of 27 colors (3-level RGB).[7]
| Pasopia 7 hardware palette - 27 colors, 3-level RGB | ||||||||
|---|---|---|---|---|---|---|---|---|
| 0x00 | 0x01 | 0x02 | 0x03 | 0x04 | 0x05 | 0x06 | 0x07 | 0x08 |
| 0x09 | 0x0A | 0x0B | 0x0C | 0x0D | 0x0E | 0x0F | 0x10 | 0x11 |
| 0x12 | 0x13 | 0x14 | 0x15 | 0x16 | 0x17 | 0x18 | 0x19 | 0x1A |
The 8 base colors are displayed in bold.
Actual color limits depend on the graphic mode used:[7]
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