Category:Sony HB-75
This page was last modified 00:47, 6 July 2021 by Gdx. Based on work by Mars2000you and Msxholder and others.

Contents

Description

The HB-75 is the big brother of the HB-55 as it comes with more RAM and a better keyboard. The following models exist:

Product Region PSU Keyboard Video and audio out Colour Expansion
Sony HB-75 JP 100V 60Hz QWERTY/JP50on RF, Composite video and audio Black or White 1 Cart + 1 Exp
Sony HB-75AS AU 240V 50Hz QWERTY with £ key RF, RGB SCART, Composite V+A DIN Black 2 Cartridges
Sony HB-75B UK 240V 50Hz QWERTY with £ key RF, RGB SCART, Composite V+A DIN Black 2 Cartridges
Sony HB-75D DE 220V 50Hz QWERTZ RF, RGB SCART, Composite V+A DIN Black 2 Cartridges
Sony HB-75F FR 220V 50Hz AZERTY RGB SCART Black 2 Cartridges
Sony HB-75P Europe 220V 50Hz QWERTY with £ key RF, RGB SCART, Composite V+A DIN Black 2 Cartridges


The machine comes with a built-in Personal Databank with saving on cassette tape or the included HBI-55 data cartridge.

The Japanese model has only one cartridge slot, but the expansion bus can not be used as second cartridge slot. On the international versions, the expansion bus slot is replaced by a second cartridge slot.

The firmware is launched automatically when you boot the machine.

Brand Sony
Model HB-75 / HB-75AS / HB-75B / HB-75D / HB-75F / HB-75P
Year 1984
Region See table above
Launch price DE: 998 DM
JP: ¥69,800
NL: ƒ1299
UK: £299
RAM 64kB in slot 2
VRAM 16kB
Media MSX cartridges
Video Texas Instruments TMS9918ANL (HB-75) or TMS9929A (other models)
Audio PSG (AY-3-8910A or YM2149F)
Chipset none (separate IC's)
Keyboard layout see table above
Extras Personal Databank, reset button, HBI-55 S-RAM data cartridge
Emulation ROMs dumped and emulated for HB-75, HB-75D and HB-75P versions. The HB-75 rear expansion port is handled like a regular MSX cartridge slot. ROM dumps needed for all other versions. See this thread for details

Pictures

Check also the pages about the different models!

Sony HB-75 (white)
Sony HB-75F
Sony HB-75 (black)
Sony HB-75P
Sony HB-75D
Sony HB-75 all models right side
Sony HB-75 (white) back
Sony HB-75AS/B/D/P back
Sony HB-75P inside
Sony HB-75F back

Specifications

The HB-75 is a MSX1 with a Z80A from NEC (D780C-1). Its RAM is in slot 2.

Slot Map for HB-75 model

Slot 0 Slot 1 Slot 2 Slot 3
Page C000h~FFFFh Front
cartridge
slot
64kB
RAM
Expansion
Bus
Page 8000h~BFFFh DataBank
Page 4000h~7FFFh Main-ROM
Page 0000h~3FFFh

Slot Map for other models

Slot 0 Slot 1 Slot 2 Slot 3
Page C000h~FFFFh Front
cartridge
slot
64kB
RAM
Back
cartridge
slot
Page 8000h~BFFFh DataBank
Page 4000h~7FFFh Main-ROM
Page 0000h~3FFFh

Connections

  • RF output (on all models except HB-75F)
  • Analog sound output (mono) and composite output (only HB-75)
  • 6-pin DIN Audio/Video connector on HB-75AS, HB-75B, HB-75D and HB-75P
  • RGB output (SCART) on HB-75AS, HB-75B, HB-75D, HB-75F and HB-75P
  • Data Recorder connector
  • Centronics compatible Parallel port for a printer
  • 2 general connectors (Joysticks, Mouse, Paddle controllers, etc)
  • 1 cartridge slot (HB-75) or 2 cartridge slots (other models)
  • 1 specific I/O port expansion bus with two polarizing keys (only HB-75)
  • Power plug for main power supply

Upgrades

Adding a disk drive to this system has the effect that the firmware menu (Personal Data Bank) is skipped on startup. If both a disk drive and S-RAM cartridge, such as the HBI-55 is present the menu is not skipped, but the disk drive is disabled. No workaround is available for this.

External links

Pages in category "Sony HB-75"

The following 6 pages are in this category, out of 6 total.

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