archive.worldofdragon.org

Posted: **Tue Nov 11, 2025 10:23 pm**

Hello,
some time ago I converted for the CoCo and Dragon a game created by Allan Turvey (not an AGD game, of course)
Lately I have seen that game published in the CoCo archive, but it is not my last vesion, the last one supports the CPU HD6309 and in case it was present, the game will enter native mode to help speed up a bit..
I am uploading here that last version for CoCo/Dragon with the std BEEP commands
If you happen to have the SuperSprite-FM+ (John Whitworth), then executing the game with it will enable FX effects because detecting the chip
AY-3-891x the sounds would be produced by that chip (FX)
To play the game just do:
- on a CoCo: LOADM"AST38T9M":EXEC
- on a Tano: RUN"AST38T9M.BIN"
EDIT: I forgot to tell the accepted keys:
- 'O' moves the player (triangle) clockwise
- 'P' moves counterclockwise
- 'Q' acelerates by moving the player in the direction pointed by the triangle
- 'A' moves to another position (Hyperspace mode) or sets a protector shield (shield mode)
- 'Enter' changes palette Black/White or Black/Green
- at the game beginning, 'P' switches between Hyperspace and Shield
- 'R' allows the player to redefine the working keys
Enjoy -thumbup
saludos

AST38T9M.ZIP: (22.77 KiB) Downloaded 162 times

: AST38T9M1.jpg (26.89 KiB) Viewed 2491 times

: AST38T9M2.JPG (39 KiB) Viewed 2491 times

: AST38T9M3.jpg (14.95 KiB) Viewed 2491 times

Posted: **Tue Nov 11, 2025 10:31 pm**

Hi Pere,

Very nice work!

In which address is the AY chip mapped? Would it work with the JCB Sound Extension Module?

Cheers,
Rob

Posted: **Wed Nov 12, 2025 7:23 pm**

Hello Robert,
these are the port definitions included in the source code. Probably they are the ones used in the SuperSprite-FM+ by John Whitworth.

Code: Select all

	IF MPI
FMPORT		equ	$ff5c	; YM2149 register select port for MPI	;
FMDATA		equ	$ff5d	; YM2149 data port for MPI					;
	ELSE
FMPORT		equ	$ff7c	; YM2149 reg. select port Oojamaflip	;
FMDATA		equ	$ff7d	; YM2149 data port for Oojamaflip		;
	ENDIF

If the addresses used in the JCB sound module could be changed, there is a chance!
Hope this would help.
cheers!

Posted: **Wed Nov 12, 2025 7:30 pm**

Hi, Robert
in case they don't match and you cannot change them, let me know what addresses are used by the JCB sound module
It will be very easy to recompile the source file changing these numbers!
cheers!

Posted: **Wed Nov 12, 2025 9:44 pm**

Hi Pere!

The ports are $fefe and $feff for the JCB Microsystems sound extension module.

https://archive.worldofdragon.org/image ... _Small.jpg

Posted: **Wed Nov 12, 2025 10:46 pm**

robcfg wrote: ↑Wed Nov 12, 2025 9:44 pm Hi Pere!
The ports are $fefe and $feff for the JCB Microsystems sound extension module.
https://archive.worldofdragon.org/image ... _Small.jpg

Hi Robert,
I have compiled this game with the addresses $fefe and $feff. Attached a zip with the DSK and VDK for both machines
regards!

Ps If you don't mind, just let me know if it works for you!

Posted: **Wed Nov 12, 2025 11:12 pm**

I'll test it during the weekend, thank you very much!

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