Cromemco Dazzler Manual Download Page 1

Summary of Contents for Dazzler

Page 1: ...Cromemco u s Patent No 4121283 Copyright 1978 Cromemco Inc 3 cromemco I e e e SlMci r compul _ pe lp I no IIERNAlIDC AYI NOUH U VIEW CA Pan No 023 0003 November 1978...

Page 2: ...Using Two Dazzlers In Your Computer Test Program Tune Up Section 2 Assembly Instructions 7 Assembly Of Dazzler Board No 1 Assembly Of Dazzler Board No 2 Interboard Connection TV Connection Resistor C...

Page 3: ......

Page 4: ...displayed in full color Alpha numeric messages titles or comments can similar be displayed in conjunction with DAZZLER games or DAZZLER graphic displays A new interface board from Cromemco our D 7A I...

Page 5: ...the information in the memory into a color TV signal The key advan tage of using DMA is that the DAZZLER can dis play a picture while at the same time the computer is executing either a related or unr...

Page 6: ...ard The controller issues a Hold command when it is ready to access the computer memory When the computer finishes the current machine cycle it issues a Hold Acknowledge signal to begin DMA In additio...

Page 7: ...he function of each of the eight bits of this output port is shown in this table Only Two Sirt o fnput Port srs Utsd D2alJ No b1uo 01 NOI Md 05 0 Pi in 512 byl 01 mo l In order to generate a TV pictur...

Page 8: ...n resolution X 4 mode each bit of the memory is used to either turn on or off a single element of the picture The eight picture elements controlled by a single byte have the following geometric rela t...

Page 9: ...This turns on the DAZZLER and tells it that the picture that it is to display begins at location zero in memory Next the program uses the front panel sense switches to set the control word sent to ou...

Page 10: ......

Page 11: ...der in position diode 02 11N914 Take care to orient the diode so that the cathode banded end is toward the top of the board D Solder in place the inductors L1 and L2 The in ductors L1 and L2 are ident...

Page 12: ...rom envelope No 2 into their sockets on Board 2 Take special care to see that 8 every IC is properly oriented in its socket and that each pin of every IC is properly engaged in the socket Interboard C...

Page 13: ...REEN BROWN GOLD RED RED BROWN GOLD RED VIOLET BROWN GOLD ORANGE ORANGE BROWN GOLD YELLOW VIOLET BROWN GOLD GREY RED BROWN GOLD BROWN BLACK RED GOLD BROWN GREEN RED GOLD VIOLET GREEN RED GOLD WHITE BRO...

Page 14: ...DAZZLER _ _ s FoilDburam Board No 1 o 1 u 10...

Page 15: ...I I o z l o...

Page 16: ...a FoilDiagram Board No 2...

Page 17: ...SChematicDiagrarn Board No 2 r u s P Ulnl No 4121283 COPYRIGttT 1976 IV CROMEiIlCO __ IWRNIAlGJCOMf ON NT IoTCltiIG ESSENTI l _ _ l a _ 13...

Page 18: ...93 010 0016 IC14 15 7400 010 0000 IC52 7408 010 0027 IC16 18 7410 010 0026 IC53 7493 010 0016 IC19 7404 010 0030 IC54 7475 010 0018 IC20 7420 010 0025 IC55 74175 010 0006 IC21 7432 010 0033 IC56 74LS3...

Page 19: ...0035 R14 16 10K 001 0030 R17 15K 001 0031 Inductors Part No R18 820 001 0017 R19 1 5K 001 0020 L1 L2 22 H 007 0000 R20 330 001 0012 R21 220 001 0010 Transistors Part No R22 39 001 0002 01 2N3906 009...

Page 20: ...d to Cromemco for a fixed service fee We reserve the right to refuse to repair any pro duct that in our opinion has been subject to abnor mal electrical or mechanical abuse The service fee is currentl...

Page 21: ...SchematicDiagram Board No 1 I I le II I...

Page 22: ...No 4121283 0 __ _I_N1 Tt C Uo DITW 0 100_ __ lIQlliIMT1OI WT a 1 _ t otlI1 00 0 Q OCII Ill JUIU lO_tN u t Lto_l CMoUI UI 11 N l 11 go CI OCI 00 0QI rrU 1I uo r llVIUll o on_ IlIr 0 t T a JI 0 I l _ t...

Page 23: ...CO IWARNIMilCCMPOHtNT lUTOtIHG SSEH T1AL f _ __ _ __ J 1 I _ r _ e r i s I _ 4 W l r L I I L rt j tJ t 1 a L 7 JL l io t E l J _ 1 L l L i 1 b IlbL _ L 1 rr j h 1 f L L V e J f L J t l GC L S B I 1 1...

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