Type 5540

Introduction
5.25" Floppy Models
3.5" Floppy Models

Content created by "Mr. Tahara" (mirror HERE and HERE). Edited by Tomáš Slavotínek.


Introduction

The 5540 was introduced as a lower-end alternative to the 5550. All variants were housed in a relatively compact desktop enclosure. To compensate for the reduced number of "standard" expansion slots, dedicated slots for memory expansion and Kanji ROM were provided. When the 5550 moved to the desktop form factor, both models switched to the smaller 3.5" floppy drives.

Models B and E use the i8086 processor, all other models use the i80286.


5.25" Floppy Models

5540bfgh image

Model Price
(JY)
CPU RAM HDD FDD Video #
Sl.
Notes
5541-B01 380,000 i8086
8 MHz
256
1024
5.25"
2DDx1
24-dot
Mono
3
5541-B02 440,000 i8086
8 MHz
256
1024
5.25"
2DDx2
24-dot
Mono
3
5541-B06 680,000 i8086
8 MHz
256
1024
10 5.25"
2DDx1
24-dot
Mono
3
5541-E02 490,000 i8086
8 MHz
256
1024
5.25"
2DDx2
16-dot
Color
3
5541-E06 730,000 i8086
8 MHz
256
1024
10 5.25"
2DDx1
16-dot
Color
3
5541-J02 645,000 i80286
8 MHz
640
13MB
5.25"
2HCx2
24-dot
Mono
3 Kanji font standard equipment
5541-J08 935,000 i80286
8 MHz
640
13MB
20 5.25"
2HCx1
24-dot
Mono
3 Kanji font standard equipment
5541-J08Z unknown i80286
8 MHz
640
13MB
20 5.25"
2HCx1
24-dot
Mono
3 Kanji font standard equipment
Other unknown
5541-J12 645,000 i80286
8 MHz
640
13MB
5.25"
2HCx2
24-dot
Mono
3 Kanji font standard equipment,
384KB Multiplex Memory Adapter
5541-J18 935,000 i80286
8 MHz
640
13MB
20 5.25"
2HCx1
24-dot
Mono
3 Kanji font standard equipment,
384KB Multiplex Memory Adapter
5541-K02 805,000 i80286
8 MHz
640
13MB
5.25"
2HCx2
24-dot
Color
3 Kanji font, Graphic Support Card
standard equipment
5541-K08 1,095,000 i80286
8 MHz
640
13MB
20 5.25"
2HCx1
24-dot
Color
3 Kanji font, Graphic Support Card
standard equipment
5541-K08Z unknown i80286
8 MHz
640
13MB
20 5.25"
2HCx1
24-dot
Color
3 Kanji font, Graphic Support Card
standard equipment,
Others unknown
5541-K12 805,000 i80286
8 MHz
640
13MB
5.25"
2HCx2
24-dot
Color
3 Kanji font, Graphic Support Card
standard equipment,
384KB Multiplex Memory Adapter
5541-K18 1,095,000 i80286
8 MHz
640
13MB
20 5.25"
2HCx1
24-dot
Color
3 Kanji font, Graphic Support Card
standard equipment,
384KB Multiplex Memory Adapter
5541-BCx unknown i8086
8 MHz
256
1024
5.25"
2DD
24-dot
Mono
3 Model for Taiwan
5541-JCx unknown i80286
8 MHz
640
13MB
5.25"
2HC
24-dot
Mono
3 Chinese character font
standard equipment
Model for Taiwan

Note: The list includes some models that were not covered by the available IBM documentation (see entries with "unknown" price). The information pertaining to these models may not be entirely accurate. Specifically:

  • Models with the Z suffix - no information other than the suffix is known
  • Taiwanese models - no information other than the model name (found on the web)

Memory

In KDOS, the memory above 1 MB can be used only as a RAM disk.
In OS/2, all memory can be used for programs.

Floppy Drives

2DD is 720KB
2HC is 1.2MB

Up to 2 floppy drives can be installed, except for the models with a hard drive.
Later, an external 3.5-inch drive for media conversion could be added.

Video Modes

Displays with 16-dot characters have a resolution of 720x512 pixels.
Displays with 24-dot characters have a resolution of 1024x768 pixels.

16 out of 64 colors for both 16-dot and 24-dot types.

Kanji Characters

Early models don't come with a Kanji ROM as standard equipment. For these models, Kanji fonts are loaded from software if the optional Kanji font card isn't installed.


3.5" Floppy Models

The type of diskette drive has been changed, but other than that, there are virtually no other changes. Therefore, all software and options designed for the older 5540 models remain compatible.

5540mp image

Model Price
(JY)
CPU RAM HDD FDD Video #
Sl.
Notes
5541-M02 600,000 i80286
10 MHz
1MB
13MB
3.5"
2HDx2
24-dot
Mono
2
5541-M08 870,000 i80286
10 MHz
1MB
13MB
20 3.5"
2HDx1
24-dot
Mono
2
5541-M12 540,000 i80286
10 MHz
1MB
13MB
3.5"
2HDx2
24-dot
Mono
2
5541-M19 666,000 i80286
10 MHz
1MB
13MB
30 3.5"
2HDx1
24-dot
Mono
2
5541-MR2 unknown i80286
10 MHz
1MB
13MB
3.5"
2HDx2
24-dot
Mono
2 Ricoh OEM
5541-MR8 unknown i80286
10 MHz
1MB
13MB
20 3.5"
2HDx1
24-dot
Mono
2 Ricoh OEM
5541-MS2 unknown i80286
10 MHz
1MB
13MB
3.5"
2HDx2
24-dot
Mono
2 Ricoh OEM
5541-MS9 unknown i80286
10 MHz
1MB
13MB
30 3.5"
2HDx1
24-dot
Mono
2 Ricoh OEM
5541-P02 745,000 i80286
10 MHz
1MB
13MB
3.5"
2HDx2
24-dot
Color
2 Graphics support function
LSI standard equipment
5541-P08 1,015,000 i80286
10 MHz
1MB
13MB
20 3.5"
2HDx1
24-dot
Color
2 Graphics support function
LSI standard equipment
5541-P12 671,000 i80286
10 MHz
1MB
13MB
3.5"
2HDx2
24-dot
Color
2 Graphics support function
LSI standard equipment
5541-P19 797,000 i80286
10 MHz
1MB
13MB
30 3.5"
2HDx1
24-dot
Color
2 Graphics support function
LSI standard equipment
5541-PR2 unknown i80286
10 MHz
1MB
13MB
3.5"
2HDx2
24-dot
Color
2 Graphics support function
LSI standard equipment
Ricoh OEM
5541-PR8 unknown i80286
10 MHz
1MB
13MB
20 3.5"
2HDx1
24-dot
Color
2 Graphics support function
LSI standard equipment
Ricoh OEM
5541-PS2 unknown i80286
10 MHz
1MB
13MB
3.5"
2HDx2
24-dot
Color
2 Graphics support function
LSI standard equipment
Ricoh OEM
5541-PS9 unknown i80286
10 MHz
1MB
13MB
30 3.5"
2HDx1
24-dot
Color
2 Graphics support function
LSI standard equipment
Ricoh OEM

* Kanji font ROM and RS-232C/422 communication port are standard equipment for all models.

Memory

In KDOS, the memory above 1 MB can be used only as a RAM disk.
In OS/2, all memory can be used for programs.

Specifications

ROM: 32 KB
VRAM: 256 KB mono, 768 KB color
Size: 370 (W) x 359 (D) x 86 mm (H)
Weight: 8.0 - 8.3 Kg
Power consumption: 65 - 90 W
Line power: 90 - 121 V AC, 47 - 67 Hz
Temperature: 5 - 35 °C
Humidity: 20 - 80%

Content created and/or collected by:
Louis Ohland, Peter Wendt, David Beem, William Walsh, Tatsuo Sunagawa, Jim Shorney, Tim Clarke, Kevin Bowling, Tomáš Slavotínek, and many others.

Ardent Tool of Capitalism - MAD Edition! is maintained by Tomáš Slavotínek.
Last update: 30 Jan 2023 - Changelog | Legal Info & Contact