Japanese Display Adapters
for High-Quality Japanese Fonts
Introduction
AVEC Series (16-bit w/ AVE)
Display Adapter II (old)
Display Adapter II (new)
Display Adapter III
Display Adapter IV
Display Adapter IV Daughter Card
Display Adapter V
BVEC Series (16-bit w/ BVE)
Display Adapter B-II (old)
Display Adapter B-II (new)
DBCS Series (32-bit w/ BVE)
DBCS Display Adapter/J
DBCS Display Adapter/NI-J
Display Modes
Video Connector
Video Connector Pinout
Japanese Display Adapters and Win95
Japanese Display Adapters and PS/2s
Content created by Sandy and Major Tom.
Introduction
High quality Japanese Fonts, that's what IBM Japan pursued from the very
beginning.
The original IBM PC was introduced together with MDA - Monochrome
Display Adapter (720x350 text only) and CGA - Color Graphics Array (640x200 2
colors) in 1981. In order to handle Japanese Kanji characters, Japanese PC
manufacturers developed their own video systems. Most of the manufacturers used
640x400 dots resolution using 16x16-dot Kanji fonts, but these video systems
were company-specific and were not compatible with each other. As a result of
this incompatibility, every company shipped its machines with a
manufacturer-specific version of MS-DOS.
IBM Japan decided to use high quality 24x24-dot fonts for their
Multistation computer line that required
1024x768 resolution. (IBM Japan also used 16x16 dots fonts for entry-level
models and these were designed for a resolution of 720x512 pixels.)
The full (non-abbreviated) Kanji fonts with 24x24 dot characters
were really beautiful and the basic concepts about the treatment of Japanese
characters and the video system of the Multistation series had been carried
over to PS/55 Display Adapter II and the video mode was known as PS/55
High-resolution mode. IBM DOS J4.0 (usually referred to as JDOS) was one of
the previously mentioned company-specific versions of MS-DOS. In this case,
modified by IBM Japan to be used solely for the PS/55 line and its PS/55 Display
Adapters.
|
1981 |
1982 |
1983 |
|
1984 |
|
1987 |
|
|
1990 |
|
IBM US |
MDA & CGA |
— |
— |
|
EGA |
|
VGA |
8514/A |
|
XGA |
|
640x200 2C, 4C |
|
|
|
640x350 6C |
|
640x480 16C |
1024x768 256C |
|
1024x768 256C |
|
IBM JP |
— |
— |
Multistation 5550 |
— |
|
PS/55 D/A |
|
XGA VGA DOS/V |
|
|
|
1024x768 16C |
|
|
1024x768 16C, 256C |
|
1024x768 640x480 16C/256C |
|
NEC & |
— |
NEC PC9801 |
|
— |
|
AX JEGA |
|
VGA DOS/V |
Others |
|
640x400 16C |
|
|
|
640x480 16C |
|
|
640x480 256C |
AVEC Series (16-bit w/ AVE)
The AVEC series of Japanese Display Adapters was developed for the 1st-gen
PS/55s such as the 5570 and 5550 386 machines that had a VGA subsystem on the
planar.
The adapters come with 1MB VRAM on board in the stock configuration (except for Display Adapter IV).
Product |
P/N |
E/C |
Shipped with |
EC # -> alternative parts |
DA |
94X0968 |
? |
5570S |
ECC13008 -> 38F4650 |
DA II |
79F0114 |
C13008A-C13008C |
5570S |
ECC64642H -> C13008F |
DA III |
79F0116 |
C13008A - C13008E |
5570S |
ECC64642H -> C13008F |
DA III |
79F0116 |
C13008F |
5570S |
|
DA II |
94X1649 |
341648A - 341648E |
5550S/T/V, 5570T/V |
ECC64642E -> C27285C |
DA II |
38F4650 |
341964A - 341964C |
5550S/T/V, 5570T/V |
ECC64642E -> C27285C |
DA III |
64F8907 |
C27285A - C27285B |
5550S/T/V, 5570T/V |
ECC64642E -> C27285C |
DA III |
64F8907 |
C27285C |
5550S/T/V, 5570T/V |
|
DA IV |
38F7016 |
C13500A - C13500B |
5530S/T |
ECC64642G -> C13500C |
DA IV |
38F7016 |
C13500C |
5530S/T |
|
DA V |
56F7520 |
? |
5550S/T/V, 5570T/V |
|
The table has been borrowed from HERE (modified).
Display Adapter (codename LEO?, P/N?)
Triple deck card intended for model 5570-S.
Not information about this adapter. Please contact me if you have this card.
Display Adapter II (old)
(P/N 38F4650)
F1 Fuse (see HERE)
J1? 60-pin Connector for VRAM module?
J2? 40-pin Connector for Font ROM module?
J18 Video Connector (see HERE)
U2-7,9,10 65X2554 (41465)
U11,13 65X1194 PG / TC110G38AF
U12,14 65X1195 PV / TC110G38CG
|
U15 94X1320 FONT
U16-47 65X2554 (41465)
U48 94X5608 PC / TC110G17AF
U51 65X1193 PD / TC110G38AF
U52 Bt453KPJ66 RAMDAC
Y1 58.000 MHz Osc
|
Custom logic implemented using the Toshiba TC110G CMOS gate arrays.
Stock video adapter for model 5550-S/T.
Display Adapter II (new)
(P/N 94X1649?)
F1 Fuse (see HERE)
J1 60-pin Connector for VRAM module?
J2 40-pin Connector for Font ROM module?
J3 Video Connector (see HERE)
U1 94X1320 FONT
U2,4 38F4782 PG / TC110G38AF
|
U3,5 56F7478 PV / TC110G38CG
U6-13 65X2554 (41465)
U17-48 65X2554 (41465)
U14 56F7477 PD / TC110G38HS
U15 56F7479 PC / TC110G17HS
U16 83X3208 RAMDAC
|
Custom logic implemented using the Toshiba TC110G CMOS gate arrays.
Display Adapter III (P/N 56F7520)
F1 Fuse (see HERE)
J1 60-pin Connector for VRAM module?
J2 40-pin Connector for Font ROM module?
J3 Video Connector (see HERE)
U1 94X1320 FONT
U2,4 38F4782 PG / TC110G38AF
|
U3,5 38F4781 PV / TC110G38CG
U6-13 65X2554? (41465)
U17-48 65X2554? (41465)
U14 56F7477 PD / TC110G38AF
U15 56F7479 PC / TC110G17AF
U16 83X3208 RAMDAC
|
Custom logic implemented using the Toshiba TC110G CMOS gate arrays.
Display Adapter IV
(P/N 38F7016, my log says P/N 79F5417)
J1 40-pin Connector for Font ROM module?
J2 80-pin Connector for VRAM module
J3 Video Connector (see HERE)
U1-14 65X2554? (41465)
U15,19,22,25,28,31,32,34 M5M4464AL-12
U16 90X8941 VGA
U17-18 65X2554 (41465?)
U20,21,23,24,26,27,29,30 65X2554 (41465?)
U33 83X3208 RAMDAC
|
U35 38F4782 PG / TC110G38AF
U36 38F4781 PV / TC110G38CG
U37 38F4780 PD / TC110G38AF
U38 38F4783 PC / TC110G17AF
U39 94X1320 FONT
Y1 28.322 MHz Osc
Y2 39.272 MHz Osc
Y3 25.175 MHz Osc
|
Custom logic implemented using the Toshiba TC110G CMOS gate arrays.
Stock Video Adapter for 5530-Z
(and probably for 5530-T).
Two types of this adapter exist.
512 KB video RAM on the PCB, additional 512 KB can be added through connector J1.
This adapter comes with a VGA chip on board (90X8941) but has the AVE connector,
rather than BVE as one would expect (5530-T/S doesn't have a VGA subsystem on
the planar; Ed. Tom: maybe IBM wanted to make this adapter easy to use in other
models with on-planar video?).
Display Adapter IV Daughter Card
(P/N 38F7075?, P/N 38F7076, P/N 64F9668)
|
J1 80-pin Connector
U2 56F7478 PV / TC110G38CG
U3 38F4782 PG / TC110G38AF
U4-19 65X2554? (41465)
|
Display Adapter V (P/N 56F7520)
F1 Fuse (see HERE)
J1 60-pin Connector for VRAM module?
J2 40-pin Connector for Font ROM module?
J3 Video Connector (see HERE)
U1 94X1320 FONT
U2,4 38F4782 PG / TC110G38AF
|
U3,5 56F7478 PV / TC110G38CG
U6-13 65X2554 (41465)
U17-48 65X2554 (41465)
U14 56F7477 PD / TC110G38AF
U15 54F7479 PC / TC110G17AF
U16 83X3208 RAMDAC
|
Custom logic implemented using the Toshiba TC110G CMOS gate arrays.
Stock video adapter for 5551-S1/T1/V1 and 5571-V1.
BVEC Series (16-bit w/ BVE)
Display Adapter B
No information about this adapter. Please contact me if you have this card.
Display Adapter B-II
(Older Version, ZIP RAM, P/N 79F2159)
F1 Fuse (see HERE)
J1 40-pin Connector (pads only)
J2 Video Connector (see HERE)
U1 90X8941 VGA
U2-25 65X2554? (41465)
U27-34 65X2554 (41465)
U48 83X3208 RAMDAC
U51,53 38F4782 PG / TC110G38AF
U52,54 56F7478 PV / TC110G38CG
U55 56F7477 PD / TC110G38AF
|
U56 56F7479 PC / TC110G17AF
U57 94X1320 FONT
VRAM M5M4464AL-12? (VGA)
Y1 25.175 MHz Osc
Y2 28.322 MHz Osc
Y3 58.000 MHz Osc
Y4 45.570 MHz Osc
Y5 47.424 MHz Osc
ZIP RAM below J1 65X2554 (41465)
|
Custom logic implemented using the Toshiba TC110G CMOS gate arrays.
Stock video adapter for 5541-T (386-20), 5561-W (486-33), 5580-Y (and
probably for 5551-Vxx).
Display Adapter B-II
(Newer Version, P/N 79F5413)
F1 Fuse (see HERE)
J1 40-pin Connector (pads only)
J2 Video Connector (see HERE)
U1-7,18 HM511665JP8 64Kx16 DRAM
U8,9 TC511664J-10 64Kx16 DRAM
U10 90X8941 VGA
U12 ROS 79F5421 / HN62408FPD55 8M ROM
U14,15 HM511664JP8 64Kx16 DRAM
U19,21 38F4782 PG / TC110G38AF
|
U20,22 56F7478 PV / TC110G38CG
U23 79F5427 PD7 / TC140G37AF
U24 56F7479 PC / TC110G17AF
U25 INMOS IMSG176-J66 RAMDAC
Y1 25.175 MHz Osc
Y2 28.322 MHz Osc
Y3 58.000 MHz Osc
Y4 45.570 MHz Osc
Y5 47.424 MHz Osc
|
Custom logic implemented using the Toshiba TC110G and TC140G CMOS gate arrays.
DBCS Series (32-bit w/ BVE)
The DBCS series of adapters was sold with the newer 486 desktops such as
5551-N/Y/R/L,
5530-L,
5521-Y.
DBCS Display Adapter/J
(P/N 49G2000, FRU 07G0446)
Stock video card for 5551-N/Y.
F1 Fuse (see HERE)
J1 Video Connector (see HERE)
U1-7,17 1M W/B HM511665JP8 64Kx16 DRAM
U8,9,12,15 1M BW HM511664JP8 64Kx16 DRAM
U10 Video 34G3196
U11 79F5427 PD7 / TC140G37AF
U13 8M ROS 79F5421 / HN62408FPD55 8M ROM
U14 4M ROS (pads only)
U16 89F5832 RAMDAC
|
U18,20 38F4782 PG / TC110G38AF
U19,21 56F7478 PV / TC110G38CG
U22 "BUSCON" 06G6722
Y1 45.570 MHz Osc
Y2 58.000 MHz Osc
Y3 47.424 MHz Osc
Y4 25.175 MHz Osc
Y5 28.322 MHz Osc
Y6 41.5390 MHz Osc
|
Custom logic implemented using the Toshiba TC110G and TC140G CMOS gate arrays.
DBCS Display Adapter/NI-J "Non-Interlaced"
(P/N 54G1464, FRU 54G1463)
J1 Video Connector (see HERE)
U1,2,4,5 HM511664JP8 64Kx16 DRAM
U3 662G8275 / HN62418FZ10 8M ROM
U6,7,9,10 76G9119
U8 66G9060PGV2 / TC6217TF
U11 ICS 9412 9128-42CW16
U12 34G3155
|
U13 54G1466
U14 79F5427 / TC140G37AF
U15 "BUSCON" 06G6722
U16 INMOS IMSG176J-80 RAMDAC
U18 85G7137 ROM
Y1 14.318 MHz xtal
|
Some of the custom logic implemented using the Toshiba TC140G CMOS gate array.
The last Japanese Display Adapter shipped with models 5551-R/L and 5521-Y1B.
Display Modes
Resolution |
Horizontal |
Vertical |
Pixel Clock |
Mode Description |
Frequency |
Polarity |
Frequency |
Polarity |
1024x768i |
46.08 kHz |
Positive |
116.2 Hz |
Positive |
58.000 MHz |
PS/55 text mode |
1024x768i |
46.51 kHz |
Positive |
114.9 Hz |
Positive |
58.000 MHz |
PS/55 graphic mode |
Please note that since the display modes are interlaced (except
for the J-NI adapter) they may not be supported by some
newer monitors (especially LCDs).
Video Connector
All Japanese PS/55 display adapters described here feature the
normal HD15 female connector used by most VGA adapters. The pinout and signals
are mostly compatible with the standard analog VGA interface as well, with two
notable differences:
First - the PS/55 adapters don't implement the Display ID feature
that normally uses pins 4, 11, 12, and 15 to identify the connected display
unit. This alone however shouldn't cause any compatibility issues.
The second, more important difference is the
presence of 12 volts on pin 9. This voltage
is used by some IBM monitors as a "power on" signal (for example the IBM
5574-C05/06/07 and M06/W06 monitors where it closes a normally opened power
supply relay). Pin 9 is used as a "key" by most other period-correct monitors,
so the voltage won't even reach the display unit, which means there's nothing
to worry about in this case. However if your monitor does have this pin
populated, be careful, as this could cause problems.
Most PS/55 display adapters have a small fuse (typically marked
"F1") that protects the 12 V supply from
an overcurrent situation. So if the connected monitor overloads the 12 V line
(i.e. by shorting it to ground), the fuse will blow. If this happens the adapter
and the rest of the system should still operate normally, but the 12 V supply
will be missing from the video connector (not really an issue, unless you intend
to use one of the IBM monitors that use it as a "power on" signal). However with
some of the newer monitors that expect 5 V on this pin, you could be less lucky
and the higher voltage could damage the monitor!
(even if the empirical evidence suggests otherwise...) To avoid any such issues
use an extension cable that doesn't have pin 9 populated, or carefully remove
it with a pair of nose pliers.
Video Connector Pinout
Pin |
I/O |
Signal |
1 |
O |
Red |
2 |
O |
Green |
3 |
O |
Blue |
4 |
N/A |
Reserved |
5 |
N/A |
Reserved |
6 |
N/A |
Red Ground |
7 |
N/A |
Green Ground |
8 |
N/A |
Blue Ground |
9 |
O |
+12 V (fused) |
10 |
N/A |
Digital Ground |
11 |
N/A |
Reserved |
12 |
N/A |
Reserved |
13 |
O |
H Sync |
14 |
O |
V Sync |
15 |
N/A |
Reserved |
Japanese Display Adapters and Win95
The PS/55 display adapter driver for Win 3.1J can be used with
Win95 to get resolution of 1024x768 and 16 colors, but it's SLOW (these adapters
are really intended to be used with DOS and Win 3.1). Japanese Readers, please
see THIS if you want to known
how to use the PS/55 Display Adapter family under Win95.
Japanese Display Adapters and PS/2s
The Japanese Display Adapters were designed to be used with IBM
Japan's specialized JDOS. It has been said that the AVEC display adapters can't
be used with the PS/2 line, but the BVEC and DA-J adapters supposedly can. I'm
not sure about these claims but I've once used one of the Japanese display
adapters with the 8570 25 MHz planar. I don't remember exactly which card have
I used. Anyway, in order to get color signal from one of the "PS/2 compatible"
display adapters you will have to use the following trick.
To get color image you have to add CHKMON.EXE
to your AUTOEXEC.BAT (the utility can be also found on the Reference Diskette).
This may be necessary only for adapters predating the DA B-II card, the later
DBCS adapters may work out of the box, but I'm not sure. I've confirmed this
using PS/2 Model 8570 with the 25MHz planar and D/A-III.
PS/55 Index
|