Toshiba T7937
Description
The Toshiba T7937 is a chipset called MSX-ENGINE designed for MSX1 systems with the following features:
- Main CPU: Toshiba TMPZ84C00A (Zilog Z80 clone) with a clock speed of 3,58 MHz.
- Programable Sound Generator: Toshiba T7766A (AY-3-8910 compatible)
- Video Display Processor: T6950 rev.B (Texas Instruments TMS9918 compatible)
- PPI chip: Toshiba TMP82C55A (Intel i8255 clone)
- MSX1 functions
- dimensions: 31.45 × 31.45 x 4.1 mm (QFP144 package)
In fact, you have a complete MSX1 system with just this T7937(A) engine, and memory chips for Main RAM, Video RAM and Main ROM, making it a true 1-chip MSX.
T7937 revisions
There are two known revisions. The T7937 and the T7937A. The difference between them is not known.
The table below attempts to map the revisions. The table may contain errors, or it may be possible that a vendor used both revisions of the T7937 during the lifetime of the system.
| Model | Used chipset |
|---|---|
| Al Fateh 100 | T7937A |
| Al Fateh 123 | T7937A |
| Gradiente Expert DDPlus | T7937A |
| Gradiente Expert Plus | T7937A |
| Sakhr AX-170 | T7937 or T7937A |
| Sakhr AX-230 | T7937A |
| Toshiba HX-51 | T7937 |
| Toshiba HX-52 | T7937 |
Links
- Toshiba T7937A Pin mapping (zip file, Portuguese)
- Toshiba Custom IC Super Integration flyer
