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Creating floppy compatible with 1.3 #74

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emoon opened this issue Feb 11, 2024 · 2 comments
Closed

Creating floppy compatible with 1.3 #74

emoon opened this issue Feb 11, 2024 · 2 comments

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@emoon
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emoon commented Feb 11, 2024

Hi,

I wonder if it's possible to create a floppy that is Kickstart 1.3 compatible? I have the following code (with a bootblock from a floppy that is usable with 1.3) (error checks removed to reduce code size, but nothing fails in my test)

The following starts fine when I use 2.0, but won't work when I try with 1.3

#include <adflib.h>
#include <stdint.h>

extern uint8_t s_bootblock[1024];

void test_create_floppy() {
     adfEnvInitDefault();

    struct AdfDevice* device = adfCreateDumpDevice("dummy.adf", 80, 2, 11);
    adfCreateFlop(device, "empty", FSMASK_INTL);
    struct AdfVolume* volume = adfMount(device, 0, false);
    adfInstallBootBlock(volume, s_bootblock);
    adfUnMount(volume);
    adfUnMountDev(device);

    adfEnvCleanUp();
}

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

uint8_t s_bootblock[1024] = {
    0x44, 0x4F, 0x53, 0x00, 0xE3, 0x3D, 0x0E, 0x73, 0x00, 0x00, 0x03, 0x70, 0x43, 0xFA, 0x00, 0x3E,
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};
@t-w
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t-w commented Feb 11, 2024

Hi,

In principal - the ADFlib should allow creating OFS/FFS volumes types 0-5, but, TBH, I haven't done such operations myself... So far, I mainly tested / used the ADFlib for accessing existing ADF images. Creating images was and is used by many tests - but myself, I haven't confronted this with real Amiga OS... So at the moment, I cannot give certain answer, I need a closer look on that.

Have you tried to create an ADF with OFS without INTL?

Is the created ADF "seen" and accessible by the OS 1.3 when the OS is started from another disk? (How it is shown in workbench?)
How about doing it without the custom bootblock?

@emoon
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emoon commented Feb 11, 2024

Hey,

If I do adfCreateFlop(device, "empty", 0); everything works actually :) Thanks!

@emoon emoon closed this as completed Feb 11, 2024
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@emoon @t-w