My System 5

My System 5 Photo

From left to right:

6502A CPU Board my replica with DOS80A and NFS3.40 in 2764 EPROM
80x25 VDU Interface Board my replica with FONT A fitted
RGB to VGA Converter my design based on GBS8200
Versatile Interface Board my replica
32K Dynamic RAM Board my replica with 32K DRAM
Econet Node Board my replica (ID15)
3 spare slots  
Floppy Disk Controller Board my replica
Dual 5.25" Floppy Disk Module (Vertical) my design with a GOTEK (0/2) and TEAC FD-55GFR 80T DS drive (1/3)

The CPU Board is fitted with DOS40B in a 2532 EPROM, the memory board is fitted with BASIC and FP Extension in 2532 EPROMs.  The memory board provides 24k of memory from 2000 to 7FFF and 8K from C000 to DFFF.

All fitted in a Vero Card Frame with my 10-slot Backplane.  Power is provided by two switch mode PSU modules in the 1U space beneath the plug-in boards.

My System 5 Photo Rear

Card Frame Details

The Card Frame is 4U high, 84HP wide and 240mm deep (1U = 1¾" or 44.45mm, 1HP = 5.08mm).

Part

Dimensions

Quantity

Original Vero KM6 Part No.

VeroTec (KM6 II)Part No.

End Plate (Flat)

4U x 240mm

2

173-24151C

950-202618

End Plate Front Angle

4U

2

173-24149E

950-202616

Upper Front Tie Bar

84HP

1

173-12552K

950-202644

Upper Front Tie Bar

50HP

1+

 

 

Lower Front Tie Bar

50HP

1+

 

 

Lower Front Tie Bar

84HP

1

173-12551B

950-202643

Upper Rear Connector Mounting Rail

84HP

1

173-13018E

950-229781

Lower Rear Connector Mounting Rail

50HP

1*

173-12701A

950-229781

Lower Rear Tie Bar

84HP

1

173-12701A

950-229781

Divider Plate

4U

1+

 

 

Front Location Moulding (left)

 

2

173-12557F

not req’d

Front Location Moulding (right)

 

2

173-12557F

not req’d

Rear Location Moulding (left)

 

1

173-12558C

not req’d

Rear Location Moulding (right)

 

1

173-12558C

not req’d

Divider Plate Moulding

 

1+

 

 

Tapped Strip

84HP

2

173-12704C

950-202001

Tapped Strip

50HP

2*

173-12704C

950-202001

End Fixing Screws

M4 x 15mm

12

173-12529A (100)

950-202734 (100)

Card Guide

160mm

20

173-12553G (10)

950-232662 (10)

Module Guide

160mm

4

173-12554D (10)

950-232664 (10)

Front Panel

5HP x 3U

6

174-12903K

957-235349

Front Panel

50HP x 1U

1

Card Mounting Bracket

plastic

12

173-12525B (2)

173-232669 (10)

Module

34HP x 4U (no handle)

1#

Floppy Drive

5.25” Half Height

2

 

 

Power Cable

4-pin IDE 50cm

1

 

 

Power Cable

4-pin IDE splitter

1

 

 

PSU

 

1

 

 

 

(many of the parts have to be custom made)

+ fabricated from 6U/60HP divider kit Part No. 950-202607

* cut down from 84HP part

# fabricated from 42HP 6U module, Part No. 957-236398

Power Supply Details

Power is provided by two RS switch mode modules:

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