Forum: support.Other
12 April 2021, 11:16
|
|
Replies: 6
Views: 338
In such a case, it is really an issue of the...
In such a case, it is really an issue of the ZZ9000 firmware not passing the chip set video through. Nothing I can do from the P96 side. From P96, it is just a simple "switch" that gets disabled...
|
|
Forum: Retrogaming General Discussion
12 April 2021, 11:13
|
|
Replies: 194
Views: 9,052
Well... the chips were designed with different...
Well... the chips were designed with different target applications in mind. SID is a musical instrument requiring minimal additional hardware resources. POKEY is a sound effects generator which can...
|
|
Forum: Retrogaming General Discussion
12 April 2021, 11:08
|
|
Replies: 194
Views: 9,052
|
|
Forum: support.Other
11 April 2021, 20:18
|
|
Replies: 6
Views: 338
|
|
Forum: Retrogaming General Discussion
11 April 2021, 00:34
|
|
Replies: 194
Views: 9,052
I'm far from a SID expert, but this statement...
I'm far from a SID expert, but this statement surprises me. The YM is just generating square waves (plus one white noise voice), and the SID can also do square waves as well. Thus, it should be...
|
|
Forum: News
08 April 2021, 18:16
|
|
Replies: 34
Views: 7,268
|
|
Forum: Coders. Asm / Hardware
07 April 2021, 19:33
|
|
Replies: 3
Views: 351
|
|
Forum: Amiga scene
07 April 2021, 14:36
|
|
Replies: 476
Views: 29,727
|
|
Forum: Coders. System
04 April 2021, 17:53
|
|
Replies: 9
Views: 683
The problem with dol_startup is that it is...
The problem with dol_startup is that it is actually private to the file system what exactly it means. In principle, it could also be a C pointer or a pointer to something completely different than...
|
|
Forum: Coders. System
04 April 2021, 11:58
|
|
Replies: 9
Views: 683
Yes. Look for the handler in the dos list whose...
Yes. Look for the handler in the dos list whose dol_Task points to the same message port as the fl_Task in the file lock structure. From there, navigate to dol_Startup, which may be a number, or a...
|
|
Forum: Coders. System
03 April 2021, 21:18
|
|
Replies: 9
Views: 683
|
|
Forum: Coders. Asm / Hardware
03 April 2021, 18:42
|
|
Replies: 96
Views: 5,106
|
|
Forum: Amiga scene
03 April 2021, 18:38
|
|
Replies: 29
Views: 2,200
|
|
Forum: support.Other
01 April 2021, 08:57
|
|
Replies: 124
Views: 5,745
|
|
Forum: Amiga scene
30 March 2021, 11:27
|
|
Replies: 476
Views: 29,727
|
|
Forum: Coders. C/C++
29 March 2021, 20:02
|
|
Replies: 19
Views: 1,279
|
|
Forum: Coders. System
29 March 2021, 09:34
|
|
Replies: 5
Views: 451
|
|
Forum: Coders. Asm / Hardware
27 March 2021, 16:57
|
|
Replies: 73
Views: 3,453
|
|
Forum: Coders. Asm / Hardware
27 March 2021, 15:22
|
|
Replies: 1,119
Views: 68,820
|
|
Forum: Coders. Asm / Hardware
27 March 2021, 15:17
|
|
Replies: 73
Views: 3,453
Well, it depends on what your task does... If...
Well, it depends on what your task does... If anything in your task uses the FPU, even if only indirectly by opening a math library, or opening something that opens the math library, then the stack...
|
|
Forum: Coders. Asm / Hardware
27 March 2021, 14:05
|
|
Replies: 1,119
Views: 68,820
|
|
Forum: Coders. Asm / Hardware
27 March 2021, 13:56
|
|
Replies: 73
Views: 3,453
|
|
Forum: support.Hardware
26 March 2021, 17:31
|
|
Replies: 14
Views: 648
|
|
Forum: Coders. Asm / Hardware
21 March 2021, 12:31
|
|
Replies: 44
Views: 2,484
Actually, this is not "official". Busy waiting...
Actually, this is not "official". Busy waiting for a scan line is never necessary, and neither sufficient as you do not know what X is. You need to wait until Paula generates its interrupt, and then...
|
|
Forum: Coders. Asm / Hardware
19 March 2021, 18:17
|
|
Replies: 73
Views: 3,453
Once again: It is not documented where in the...
Once again: It is not documented where in the stack frame the PC is stored, so you cannot expect anything. Developing software means working against documented interfaces, and there is nothing...
|
|
Forum: Coders. Asm / Hardware
19 March 2021, 14:50
|
|
Replies: 73
Views: 3,453
You can at least avoid a stack push/pop if the...
You can at least avoid a stack push/pop if the called functions are tiny by loading the "continue from here" location into a register and replace the JSR by JMP, and the RTS (for small functions) by...
|
|
Forum: Coders. Asm / Hardware
19 March 2021, 14:38
|
|
Replies: 73
Views: 3,453
|
|
Forum: Hardware mods
16 March 2021, 22:04
|
|
Replies: 65
Views: 4,743
Nothing is alive. The Amiga is as much alive as...
Nothing is alive. The Amiga is as much alive as there are other home computers. There are also forums and communities around other older home computer systems, same as there are forums for old cars,...
|
|
Forum: Hardware mods
16 March 2021, 18:44
|
|
Replies: 65
Views: 4,743
|
|
Forum: Coders. General
13 March 2021, 21:12
|
|
Replies: 199
Views: 7,559
|
|
Forum: Coders. General
13 March 2021, 18:59
|
|
Replies: 199
Views: 7,559
For an application program, the problem doesn't...
For an application program, the problem doesn't exist, not nowadays anymore. As an application program, you shouldn't depend on the legacy Tripos cruft. Problem is: This is a retro platform, and such...
|
|
Forum: Coders. General
13 March 2021, 18:18
|
|
Replies: 199
Views: 7,559
Once again: For legacy BCPL programs, special...
Once again: For legacy BCPL programs, special registers are to be populated in a way that is not documented. What is documented is RunCommand(). That - and not any register values - define the...
|
|
Forum: Coders. General
13 March 2021, 18:15
|
|
Replies: 199
Views: 7,559
That assumes that you are only using binaries...
That assumes that you are only using binaries from these versions. Frankly, nowadays I don't worry about any registers including a0/d0 as ParseArgs() is doing the argument parsing for me, and it...
|
|
Forum: Coders. General
13 March 2021, 17:59
|
|
Replies: 199
Views: 7,559
To avoid any doubt: This will not work. You...
To avoid any doubt: This will not work. You cannot safely kick off an AmigaDos binary without AmigaDos functions. Things are considerably easier for workbench programs, but they don't get a command...
|
|
Forum: Coders. General
13 March 2021, 17:55
|
|
Replies: 199
Views: 7,559
|
|
Forum: Coders. General
13 March 2021, 17:17
|
|
Replies: 199
Views: 7,559
I as a programmer? Well, nowadays, I wouldn't...
I as a programmer? Well, nowadays, I wouldn't bother about all that stuff anymore. I would locate SysBase, then open dos.library, then call ReadArgs(). That doesn't require any arguments in any...
|
|
Forum: Coders. General
13 March 2021, 17:12
|
|
Replies: 199
Views: 7,559
Yes, and if you load a binary that is compiled...
Yes, and if you load a binary that is compiled for AmigaOs, and do not start it through RunCommand() (or the workbench interface, for that matter) chances are that it wouldn't work. As long as you...
|
|
Forum: Coders. General
13 March 2021, 16:01
|
|
Replies: 199
Views: 7,559
|
|
Forum: Coders. General
13 March 2021, 15:48
|
|
Replies: 199
Views: 7,559
There are, yes. This is all BPCL legacy, but...
There are, yes. This is all BPCL legacy, but there are certainly more registers. P=A1 is the pointer to the BCPL stack and points to local arguments upon entry. G=A2 is the pointer to the globvec of...
|
|
Forum: Coders. General
13 March 2021, 14:04
|
|
Replies: 199
Views: 7,559
|
