Panasonic FS-A1FX
This page was last modified 15:16, 23 April 2019 by Gdx. Based on work by Rderooy and Mars2000you and others.

Contents

Description

Computer

The FS-A1FX is a computer released on the Japanese market by Panasonic. It is the same as the FS-A1WX but without MSX-MUSIC or Word processor, which explains why the "取消" (Cancel) and "実行" (Execute) keys are missing.

The Ren-Sha Turbo feature provides auto-fire mode while playing games. The repetition speed can be adjusted with a slider.

This model was available in black and red on the front.

Brand Panasonic
Type FS-A1FX
Year 1988-10
Region Japan
Original price ¥57.800
RAM 64kB in slot 3-0
VRAM 128kB
Media MSX cartridges, 2DD floppy disks
Video Yamaha V9958
Audio PSG (AY-3-8910 compatible, integrated in MSX-Engine T9769x)
Chipset Toshiba T9769 model A or B
Extras CPU Turbo mode, 720kB 3,5" floppy disk drive, Cockpit firmware, firmware switch, reset button, pause button, Ren-Sha Turbo slider (autofire), Kanji-ROM level 1, Kanji BASIC, Utility disk

Firmware

The built-in Cockpit software has different features, just like its predecessor Deskpac on the Panasonic MSX2 computers (Screen colors, Clock settings, Screen position adjust, Clock, Calendar + 3 options that require the utility disk: disk tool, graphic tool in SCREEN 8, picture gallery in SCREEN 12).

The firmware can be skipped by pressing DEL key while booting or by changing the position of the front switch before booting the computer.

Pictures

Computer

Panasonic FS-A1FX
Panasonic FS-A1FX rightside
Panasonic FS-A1FX box
Panasonic FS-A1FX back
Panasonic FS-A1FX PCB
Panasonic FS-A1FX FM chips location

Firmware

Cockpit Menu
Cockpit Clock settings
Cockpit Screen adjust
Cockpit Clock
Cockpit Calendar

Utility disk

Cockpit Disk tool
Cockpit Graphic tool
Cockpit Picture gallery

Specifications

The FS-A1FX is a MSX2+ with 2 cartridge slots (one at the top, one at the back) and a Z80A integrated in the MSX-Engine T9769(A or B) from Toshiba. This Z80A can be switched from to 3.57MHz to 5.37MHz via I/O port. There is a front switch to disable the Cockpit firmware execution on startup. Floppy Disk Controller chip is the TC8566AF.

Main RAM can be natively expanded to 256kB internally. (See below)

MSX-MUSIC can be added internally by soldering the missing chips. The main difficulty is to add the ROM. (See below)

Floppy Disk Belt specifications:

Type: Rubber Belt
Thickness: 0.3mm
Diameter: 58mm
Width: 3mm

Original Slot Map

Slot 0 Slot 1 Slot 2 Slot 3-0 Slot 3-1 Slot 3-2 Slot 3-3
Page C000h~FFFFh Cartridge
Slot 1
Cartridge
Slot 2
64kB
Memory
Mapper
Page 8000h~BFFFh Kanji driver A1 Cockpit
Page 4000h~7FFFh Main-ROM Disk ROM
Page 0000h~3FFFh Sub-ROM

Modified Slot Map

(Removing of A1 Cockpit and addition of MSX-MUSIC)

Slot 0 Slot 1 Slot 2 Slot 3-0 Slot 3-1 Slot 3-2 Slot 3-3
Page C000h~FFFFh Cartridge
Slot 1
Cartridge
Slot 2
64kB
Memory
Mapper
Page 8000h~BFFFh Kanji driver
Page 4000h~7FFFh Main-ROM Disk ROM MSX-Music
Page 0000h~3FFFh Sub-ROM

Connections

CPU Turbo mode

Contrary to Sony and Sanyo MSX2+ systems which run only at 3.57 Mhz, the Panasonic systems are capable of running at 5.37 MHz. In Basic this can be achieved with the following commands:

Activating the 5.37 MHz Mode

Switching to Turbo 5.37 MHz mode can be activated with the following command:

IF PEEK(&H2D)=2 THEN OUT 64,8:IF INP(64)=247 THEN OUT 65,0

Deactivating the 5.37 MHz Mode

Switching back to 3.57 Mhz is done with this command:

IF PEEK(&H2D)=2 THEN OUT 64,8:IF INP(64)=247 THEN OUT 65,1

Repair / Expand

Links