Disassembly:SABA Videoplay 20 - Revision history

E5frog at 15:03, 12 September 2024

2024-09-12T15:03:11Z

E5frog at 14:54, 12 September 2024

2024-09-12T14:54:15Z

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E5frog at 12:38, 12 September 2024

2024-09-12T12:38:39Z

E5frog at 12:05, 12 September 2024

2024-09-12T12:05:25Z

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E5frog at 11:55, 12 September 2024

2024-09-12T11:55:08Z

E5frog at 13:54, 12 April 2022

2022-04-12T13:54:09Z

E5frog at 18:08, 1 August 2020

2020-08-01T18:08:15Z

E5frog: 1 revision

2012-11-16T21:23:08Z

1 revision

66.31.32.228 at 22:31, 13 October 2005

2005-10-13T22:31:09Z

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@@ Line 2,258: / Line 2,258: @@
                  PK                       ; 132d 0c
-A132e:          DI                       ; 132e 1a
+A132e:          DI                       ; 132e 1a          disable IRQ
                  CLR                      ; 132f 70
-                 OUTS 0                   ; 1330 b0
+                 OUTS 0                   ; 1330 b0          Read button input
                  INS  0                   ; 1331 a0
                  COM                      ; 1332 18
-                 SL   4                   ; 1333 15
+                 SL   4                   ; 1333 15          Make sure only button data present
-                 CI   $f0                 ; 1334 25 f0
+                 CI   $f0                 ; 1334 25 f0       Check if ALL buttons have been pressed
-                 BF   $4,A133b            ; 1336 94 04
+                 BNZ  A133b               ; 1336 94 04       NOT all buttons pressed - go to A133B
-                 JMP  A1c34               ; 1338 29 1c 34
+                 JMP  A1c34               ; 1338 29 1c 34    ALL buttons were pressed
 A133b:          DCI  $3800               ; 133b 2a 38 00     LED OFF
                  ST                       ; 133e 17
@@ Line 3,983: / Line 3,984: @@
                  JMP  A1b86               ; 1c2e 29 1b 86
 A1c31:          JMP  A1324               ; 1c31 29 13 24
 A1c34:          .byte $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff
                  .byte $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff

@@ Line 3: / Line 3: @@
 This is the complete disassembly of the SABA Videoplay 20 made with Peter Trauner's [[f8tool]]. Original code is likely copyright &copy; SABA.
-This cartridge differs from other videocarts by its LED and the use of IRQ.<br>
+This cartridge differs from other videocarts by its LED and the use of IRQ. It uses the 3853 SMI, logic circuitry, 2KB RAM and plain masked ROM.<br>
 LED is controlled with A15 and a low signal when in the memory area $3800-$3FFF (also starting at $7800, $B800 and $F800) by using a JK flip-flop. <br>
@@ Line 4,004: / Line 4,004: @@
                  .byte $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff
                  .byte $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff
-                 .byte $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff
+                 .byte $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff
 </pre>

← Older revision		Revision as of 11:55, 12 September 2024
Line 2:		Line 2:

	This is the complete disassembly of the SABA Videoplay 20 made with Peter Trauner's [[f8tool]]. Original code is likely copyright © SABA.		This is the complete disassembly of the SABA Videoplay 20 made with Peter Trauner's [[f8tool]]. Original code is likely copyright © SABA.
		+
		+	This cartridge differs from other videocarts by its LED and the use of IRQ.<br>
		+	LED is controlled with A15 and a low signal when in the memory area $3800-$3FFF (also starting at $7800, $B800 and $F800) by using a JK flip-flop. <br>

	<pre>		<pre>

@@ Line 1: / Line 1: @@
 {{Incomplete Disassembly}}
-This is the complete disassembly of the [[Channel F]] [[SABA Videoplay 20]] made with Peter Trauner's [[f8tool]]. Original code is likely copyright &copy; SABA.
+This is the complete disassembly of the SABA Videoplay 20 made with Peter Trauner's [[f8tool]]. Original code is likely copyright &copy; SABA.
 <pre>

@@ Line 3,538: / Line 3,538: @@
                  BF   $4,A19df            ; 19dc 94 02
                  POP                      ; 19de 1c
 A19df:          LR   $2,A                ; 19df 52
                  LM                       ; 19e0 16
@@ Line 3,559: / Line 3,561: @@
                  BF   $4,A19f4            ; 19f5 94 fe
                  BF   $0,A19e4            ; 19f7 90 ec
 A19f9:          BT   0,A1a5a             ; 19f9 80 60
                  COM                      ; 19fb 18

← Older revision	Revision as of 21:23, 16 November 2012
(No difference)