Amiga 1200 & Amiga 1200HD

Commodore Amiga 1200The Amiga 1200 is an Amiga 600 with more memory, better graphics and a new Amiga Dos. This was the final 16 Bit machine that Commodore tried to push into the market, to beat IBM compatible computers. The system is well built, with a better OS (Workbench V3.1) and a program called Cross Dos to read IBM disks. Like all other Amiga computers the magnetic media is an internal 800KB drive. The machine wasn’t a failure since companies start constructing devices like external Co-processor boards, Hard Drives, CD-Rom readers and all sorts of software. I saw even a device to attach the computer to a network and a tower case to change the system into a tower computer. Magazines rated this machine with very good graphics, sound and user friendly OS. Commodore to compete with other computers released a program for the Internet so that Amiga users could go on the net to download programs and mail. Like all other models the A1200 is compatible with the other Amiga systems. The Hard Drive Controller can support a hard drive up to 2GB. The new Graphic chip-set made the machine a perfect picture & video editor especially for video titles. Some company used the machine for mixing & effects.

 

A1200 – A1200HD
1992 – $599(USA) – £399(UK)
Boxed: 260419 553031 803000 5720
1992
Motorola MC 68EC020 Multitasking 16 BIT running at a frequency of 14.7 Mhz.
The Design and Colour is the same as the A600 with an addition of a keypad. The keyboard is internal with a 96 key, QWERTY AT type layout.
The graphic capabilities of the Amiga 1200 is handled by an Advanced Amiga (AA) chip-set. In text mode display the computer is able to display a 60 X 32 & 80 X 32 resolution. While in graphic Mode 320 X 256, 320 X 512, 640 X 256, 640 X 512 resolution. The Amiga has a palette of 1.6 million colours + 2 special modes. In 320 X x Mode it was capable of displaying 32 Colours, while in 640 X x mode it could display 16 Colours. The special modes are EHB 64 Colours and HAM 4096 colours on static display. These 2 special modes could display and digitize a photo into the computers memory and save it to disk. The A1200 like the A600 is also capable to display pictures of 1280 X 400 interlaced resolution, 1280 X 200 non interlaced mode & a new graphic resolution of 1280 x 512 interlaced or 1280 x 800 overscaned with a vertical scan rate up to 73 Hz.
The Amiga is also equipped with a 4 Voice 8 bit PCM Stereo sound chip ( 2 Channels on each side) that could produce an infinite of sounds and music. This custom chip is also controlling the I/O ports of the machine. This helped to produce devices that could digitize sound into the computer, for later playback.
1x Centronics Printer Port
1x RS232 Port,
1x Mouse/Joystick Port
1x Joystick Port
1x RGB Monitor Connection
1x Composite Monitor Connection
2x RCA Phono Plug External left & right Audio Connectors
1x RF modulator
1x PCMCIA Slot 2,
1x Internal 44 pin AT/IDE interface for hard drives.
1x Expansion Port
1x External Disk Drive port with daisy chain capabilities.
The usual Commodore external power supply very similar to the C128. Connector is the same as the C128, but voltages and pinouts totally different, lighter & auto switching mode with an output of 25 Watts.
Weight & dimensions for the Amiga 1200 are 3.1 kg including Hard Disk, 490 x 250 x 70 mm (W x L x H).
1.4 Million units around the world.

The club currently owns one Amiga 1200 boxed with a 200 MB hard disk, mouse, Power Supply and Infrared Joystick. Unfortunately there are no manuals, but the machine is in excellent good cosmetic and working condition.


 

Control Port 1

9 Pin D-Sub Male

Pin Name Dir Desc
1 JOYA0 IN Joy UP
2 JOYA1 IN Joy DOWN
3 JOYA2 IN Joy LEFT
4 JOYA3 IN Joy RIGHT
5 POT AX IN Horz Pot
6 BTN A IN Fire
7 +5V OUT +5V 100mA
8 GND N/A Grnd
9 POT AY IN Vert Pot
 

 

Control Port 2

9 Pin D-Sub Male

Pin Name Dir Desc
1 JOYB0 IN Joy UP
2 JOYB1 IN Joy DOWN
3 JOYB2 IN Joy LEFT
4 JOYB3 IN Joy RIGHT
5 POT BX IN Horz Pot
6 BTN B IN Fire
7 +5V OUT +5V 100mA
8 GND N/A Grnd
9 POT BY IN Vert Pot
 

 

Expansion Port

86 Pin EDGE

Pin Name Dir Desc
1 GND N/A
2 GND N/A
3 GND N/A
4 GND N/A
5 +5V OUT
6 +5V OUT
7 EXP IN
8 -12V OUT
9 EXP IN
10 +12V OUT
11 EXP IN
12 /CONFIG IN
13 GND N/A
14 /C3 IN
15 CDAC IN
16 /C1 IN
17 /OVR IN
18 XRDY IN
19 /INT2 OUT
20 /PALOPE OUT
21 A5 OUT
22 /INT6 OUT
23 A6 OUT
24 A4 OUT
25 GND N/A
26 A3 OUT
27 A2 OUT
28 A7 OUT
29 A1 OUT
30 A8 OUT
31 FC0 IN/
OUT
32 A9 OUT
33 FC1 IN/
OUT
34 A10 OUT
35 FC2 IN/
OUT
36 A11 OUT
37 GND N/A
38 A12 OUT
39 A13 OUT
40 /IPL0 IN
41 A14 OUT
42 /IPL1 IN
43 A15 OUT
44 /IPL2 IN
45 A16 OUT
46 /BERR IN
47 A17 OUT
48 /VPA IN
49 GND N/A
50 E IN
51 /VMA OUT
52 A18 OUT
53 /RES IN
54 A19 OUT
55 /HLT IN/
OUT
56 A20 OUT
57 A22 OUT
58 A21 OUT
59 A23 OUT
60 /BR IN/
OUT
61 GND N/A
62 /BGACK IN/
OUT
63 PD15 IN/
OUT
64 /BG IN
65 PD14 IN/
OUT
66 /DTACK OUT
67 PD13 IN/
OUT
68 /PRW IN
69 PD12 IN/
OUT
70 /LDS IN
71 PD11 IN/
OUT
72 /UDS IN
73 GND N/A
74 /AS IN
75 PD0 IN/
OUT
76 PD10 IN/
OUT
77 PD1 IN/
OUT
78 PD9 IN/
OUT
79 PD2 IN/
OUT
80 PD8 IN/
OUT
81 PD3 IN/
OUT
82 PD7 IN/
OUT
83 PD4 IN/
OUT
84 PD6 IN/
OUT
85 GND N/A
86 PD5 IN/
OUT
 

 

External Drive Port

23 Pin D-SUB Female at the Computer

Pin Name Dir Desc
1 /RDY IN/
OUT
Dsk Rdy
2 /DKRD IN Dsk Rd Data
3 GND N/A Grnd
4 GND N/A Grnd
5 GND N/A Grnd
6 GND N/A Grnd
7 GND N/A Grnd
8 /MTRXD IN Dsk Mot Cntrl
9 /SEL2B IN Sel Drv 2
10 /DRESB IN Dsk Reset
11 /CHNG IN/
OUT
Dsk rem from drv
12 +5V OUT +5V DC 250mA Max
13 /SIDEB IN Sel Disk Drv
14 /WPRO IN/
OUT
Dsk is wr prot
15 /TKO IN/
OUT
Drv hd pos
16 /DKWE IN Disk wr ena
17 /DKWD OUT Disk wr data
18 /STEPB IN Step the hd pls
19 DIRB IN Sel hd dir
20 /SEL3B IN Sel Drv 3
21 /SEL1B IN Sel Drv 1
22 /INDEX IN/
OUT
Dsk ind pls
23 +12 IN +12V DC 160mA max
 

 

LightPen

9 Pin D-Sub Male

Pin Name Dir Desc
1 —– N/A
2 —– N/A
3 —– N/A
4 —– N/A
5 PEN PRS IN Light pen touch Scrn
6 LIGHT PEN IN Capture Beam Pos
7 +5V OUT Grnd
8 GND N/A
9 —– N/A
 

 

Mouse Port

9 Pin D-Sub Male

Pin Name Dir Desc
1 MSE V IN Vert Mouse
2 MSE H IN Horz Mouse
3 MSE VQ IN Vert Quad
4 MSE HQ IN Horz Quad
5 MSE BTN 2 IN Mouse Btn 2
6 MSE BTN 1 IN Mouse Btn 1
7 +5V OUT +5V 100mA
8 GND N/A Ground
9 MSE BTN 3 IN Mouse Btn 3
 

 

Parallel Port

25 Pin D-SUB Female at the Computer

Pin Name Dir Desc
1 /STRB OUT Strobe
2 D0 IN/
OUT
Data Bit 0
3 D1 IN/
OUT
Data Bit 1
4 D2 IN/
OUT
Data Bit 2
5 D3 IN/
OUT
Data Bit 3
6 D4 IN/
OUT
Data Bit 4
7 D5 IN/
OUT
Data Bit 5
8 D6 IN/
OUT
Data Bit 6
9 D7 IN/
OUT
Data Bit 7
10 /ACK IN Acknow
11 BUSY IN/
OUT
Busy
12 POUT IN Paper Out
13 SEL IN/
OUT
Sel Shared with RS232
14 +5V PULLUP OUT +5V 10mA
15 NC N/A No Conn
16 /RESET IN Rst Cold Start
17 GND N/A Grnd
18 GND N/A Grnd
19 GND N/A Grnd
20 GND N/A Grnd
21 GND N/A Grnd
22 GND N/A Grnd
23 GND N/A Grnd
24 GND N/A Grnd
25 GND N/A Grnd
 

 

RGB Monitor

23 Pin D-SUB Female at the Computer

Pin Name Dir Desc
1 X CLK IN Ext Clk
2 X CLK EN IN Ext Clk Ena 47Ohm
3 RED OUT Anlg Red 75ohm
4 GRN OUT Anlg Green 75ohm
5 BLU OUT Anlg Blue 75ohm
6 DI OUT Dig Intens 47ohm
7 DB OUT Dig Red 47ohm
8 DG OUT Dig Green 47ohm
9 DR OUT Dig Blue 47ohm
10 C SYNC OUT Comp Sync 47ohm
11 H SYNC OUT Horiz Sync 47ohm
12 V SYNC OUT Vert Sync 47ohm
13 GND RTN N/A Dig Grnd X CLK EN
14 ZD OUT Gen lock overlay 47ohm
15 C1 OUT Clk out 47ohm
16 GND N/A Video Grnd
17 GND N/A Video Grnd
18 GND N/A Video Grnd
19 GND N/A Video Grnd
20 GND N/A Video Grnd
21 -12V OUT -12V 50mA max
22 +12V OUT +12V 100mA max
23 +5V OUT +5V 100mA max
 

 

Serial I/O Port

25 Pin D-SUB Male at the Computer

Pin CBM RS
232
Dir Desc
1 GND GND N/A Frm Grnd
2 TXD TXD OUT Trans Data
3 RXD RXD IN Rec Data
4 RTS RTS OUT Req To Snd
5 CTS CTS IN Clr To Snd
6 DSR DSR IN Data Set Rdy
7 GND GND N/A Sys Grnd
8 DCD DCD IN Carr Det
9 +12V —– OUT +12V Carr
10 -12V —– OUT -12V Carr
11 AUDO —– OUT Audio Out
12 —– S.SD OUT Speed Indic
13 —– S.CTS OUT
14 —– S.TXD OUT
15 —– TXC IN/
OUT
16 —– S.RXD IN
17 —– RXC IN/
OUT
18 AUDI —– IN Audio In
19 —– S.RTS IN
20 DTR DTR OUT Data Term Rdy
21 —– SQD IN/
OUT
22 RI RI IN Ring Indic
23 —– SS N/A
24 —– TXC1 IN/
OUT
25 N/C N/C N/A No Conn