HexCard V0.1 for C64
Author: Tomas Pribyl, 1997
E-mail: dundera@a1.fido.cz

This package contains:
----------------------
7seg00.eqn
7seq00.jed
7seq00.log
7seg01.eqn
7seq01.jed
7seq01.log
hexcard.gif
hexcard.txt   - this document

This simple device is intended for displaying numerical value in hexadecimal
form 00 to FF on the LED display.
It may display one byte in hex, which you write to data register of HexCard.
This register is placed into IO area #1, at address $de40. It is accessible
only for writting.

Two GAL16V8 from Lattice are used in this construction. GAL16V8 is
programmable logic, and must be programed in GAL programmer.

You may use two single 7segments or one dual 7segment.  

Single 7 segment
----------------

7.62 mm
HDSP-7303   red
HDSP-7803   green

10.00 mm
HDSP-F503   green


       -------------
SC  1=|      a      |=10  A
      |    =====    |
F   2=|  f[     ]b  |=9   B
      |   [  g  ]   |
G   3=|    =====    |=8   C
      |  e[     ]c  |
E   4=|   [     ]   |=7   DP
      |    =====    |
D   5=|      d   o  |=6   SC
       -------------



Dual 7 segment
--------------

14.20 mm
HDSP-5623   green



  18 17 16 15 14 13 12 11 10
                  
 ---------------------------
|      a             a      |
|    =====         =====    |
|  f[     ]b     f[     ]b  |
|   [  g  ]       [  g  ]   |
|    =====         =====    |
|  e[     ]c     e[     ]c  |
|   [     ]       [     ]   |
|    =====         =====    |
|      d   oDP       d   o  |
 ---------------------------
                  
  1  2  3  4  5  6  7  8  9
     left           right
     
1 - left E
2 - left D
3 - left C
4 - left DP

5 - right E
6 - right D
7 - right G
8 - right C
9 - right DP

10 - right B
11 - right A
12 - right F
13 - right SC

14 - left SC
15 - left B
16 - left A
17 - left G
18 - left F

    
