Digiblaster howto - Revision history

TFM: /* Diagram (Digiblaster v2) (Joshua) */

2017-11-06T08:08:45Z

‎Diagram (Digiblaster v2) (Joshua)

Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /mnt/cpcwiki-httpdocs/includes/diff/DairikiDiff.php on line 434

Polluks: /* The programming */ typo

2016-07-24T02:38:57Z

‎The programming: typo

MacDeath at 19:00, 19 December 2010

2010-12-19T19:00:26Z

MacDeath at 19:00, 19 December 2010

2010-12-19T19:00:04Z

Nocash: /* The programming */

2010-03-05T00:10:46Z

‎The programming

Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /mnt/cpcwiki-httpdocs/includes/diff/DairikiDiff.php on line 434

Octoate: added categories (Hardware and DIY)

2010-02-27T11:56:42Z

added categories (Hardware and DIY)

Octoate: /* Diagram (Digiblaster v2) (Joshua) */ - it wasn't the Joshua from the group Exodus

2010-02-10T20:43:21Z

‎Diagram (Digiblaster v2) (Joshua): - it wasn't the Joshua from the group Exodus

Nocash: /* Notes and Differences between v1 and v2 */

2010-01-08T18:05:30Z

‎Notes and Differences between v1 and v2

Nocash: /* Differences between v1 and v2 */

2010-01-08T18:02:19Z

‎Differences between v1 and v2

Nocash: /* Differences between v1 and v2 */

2010-01-07T12:50:11Z

‎Differences between v1 and v2

← Older revision		Revision as of 08:08, 6 November 2017
Line 122:		Line 122:
	''Converted 1996/1998 by [[Octoate]]'''		''Converted 1996/1998 by [[Octoate]]'''

−	[[Category:Programming]] [[Category:Printers and printer ports]] [[Category:Music and sound~~]][[Category:DIY~~]]	+	[[Category:Digiblaster]]
		+	[[Category:DIY]]
		+	[[Category:Programming]]
		+	[[Category:Printers and printer ports]]
		+	[[Category:Music and sound]]

@@ Line 43: / Line 43: @@
 The program writes directly to the hardware of the CPC.
-You can use the port with the adress &EFxx.
+You can use the port with the address &EFxx.
 Because the CPC has only a 7bit printer port (we need 8bit for the Digiblaster) we use the STROBE signal, which is inverted by the hardware, so you have to invert your sound value.
 Now we want to output the value &C5:
   LD a,&C5    ;A=&C5
-  LD B,&EF    ;load the port adress
+  LD B,&EF    ;load the port address
   XOR &80     ;invert the 7th bit
   OUT (C),A   ;out to the printer port

← Older revision		Revision as of 19:00, 19 December 2010
Line 122:		Line 122:
	''Converted 1996/1998 by [[Octoate]]'''		''Converted 1996/1998 by [[Octoate]]'''

−	[[Category:Programming]] [[Category:Printers and printer ports]] [[Category:Music and sound]]	+	[[Category:Programming]] [[Category:Printers and printer ports]] [[Category:Music and sound]][[Category:DIY]]

← Older revision		Revision as of 19:00, 19 December 2010
Line 122:		Line 122:
	''Converted 1996/1998 by [[Octoate]]'''		''Converted 1996/1998 by [[Octoate]]'''

−	[[Category:Programming]] [[Category:~~Hardware~~]] [[Category:~~DIY~~]]	+	[[Category:Programming]] [[Category:Printers and printer ports]] [[Category:Music and sound]]

@@ Line 47: / Line 47: @@
 Now we want to output the value &C5:
-<pre>
+ LD a,&C5    ;A=&C5
-LD a,&C5    ;A=&C5
+ LD B,&EF    ;load the port adress
-LD B,&EF    ;load the port adress
+ XOR &80     ;invert the 7th bit
-XOR &80     ;invert the 7th bit
+ OUT (C),A   ;out to the printer port
 OUT (C),A   ;out to the printer port
-−
-LD a,&C5    ;A=&C5
-LD B,&EF    ;load the port adress
-XOR &80     ;invert the 7th bit
-OUT (C),A   ;out to the printer port
-</pre>
 The accu is the register A.

← Older revision		Revision as of 11:56, 27 February 2010
Line 129:		Line 129:
	''Converted 1996/1998 by [[Octoate]]'''		''Converted 1996/1998 by [[Octoate]]'''

−	[[Category:Programming]]	+	[[Category:Programming]] [[Category:Hardware]] [[Category:DIY]]

@@ Line 108: / Line 108: @@
 [[Image:Digiblaster_diagram_v1.png]]
-== Diagram (Digiblaster v2) (Joshua/Exodus) ==
+== Diagram (Digiblaster v2) (Joshua) ==
 [[Image:digiblaster diagram.jpg]]

@@ Line 88: / Line 88: @@
 ''[[Face Hugger|A. Stroiczek]]''
-== Notes and Differences between v1 and v2 ==
+== Differences between v1 and v2 ==
 Both versions are doing more or less the same (and are compatible at software side). Both versions produce linear D/A conversion (though in v1 the conversion is glitchy, v2 is more accurate). Also, in v2, the 470 Ohm POT is replaced by a normal 470 Ohm resistor plus 22uF capacitor.
@@ Line 97: / Line 97: @@
    v2 1K  2K  4K  8K  16K 32K 64K 128K
 Where v1 uses standard E12-series values. Whilst v2 uses less common values like 2K (which you may not have at home), and even totally non-standard values like 4K (which aren't manufactured, and need to be produced by using two 2K resistors).
 * '''Caution''' Both schematics connect GND to Pin9, which works on the CPC's (unmodified) [[Connector:Printer_port|7bit printer port]], but not on (upgraded) [[8bit Printer Ports]], so better connect GND elsewhere (eg. Pin19).