Re: ADTpro protocol for sending VSDRIVE and BASIC over serial

[osgeld <kevin@hackaday.com>]

On Wednesday, June 12, 2013 12:18:28 AM UTC-5, BLuRry wrote:
> On Tuesday, June 11, 2013 11:40:57 PM UTC-5, osgeld wrote:
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> > Java and I dont get along to well so I cant seem to pin it down in the source code, but for example speedy boot prodos...
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> > Apple Sends 0xB2 (2)
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> > I send back 0x50 (P)
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> > one byte containing the LSB of the filesize
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> > one byte containing the MSB of the filesize
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> > prodos file one byte at a time and it goes well
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> > I have tried many things and keep locking on sending the VSDRIVE driver, and I have not gotten to basic yet but will need it as well
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> > So Mr David can you fill me in on these 2 protocol's please?
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> > Thank you very much in advance!
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> I cannot tell you about the protocol, but I can tell you how to load a basic program in raw and run it -- I had to solve this for Apple Game Server years ago...
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> 
> -------------------------------------
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> /**
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> * Address of routine to run the current basic program
> 
> */
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> public static final int BASIC_RUN = 0x00d566;
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> /**
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> * Basic program starting address pointer
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> */
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> public static final int BASIC_PTR_START = 0x0067;
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> /**
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> * Basic variable LOMEM variable pointer
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> */
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> public static final int BASIC_PTR_LOMEM = 0x0069;
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> /**
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> * Basic variable HIMEM variable pointer
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> */
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> public static final int BASIC_PTR_HIMEM = 0x0073;
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> /**
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> * Basic program ending address pointer
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> */
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> public static final int BASIC_PTR_END = 0x00AF;
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> int length = loadGame(game);
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> // Set start address of basic program
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> storeMemory(0xD8, 0x00); // Reset onErr flag
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> storeMemory(toInt(game.getStart()) - 1, 0);
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> storeMemory(BASIC_PTR_START, DataUtil.getWord(toInt(game.getStart())));
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> storeMemory(BASIC_PTR_END, DataUtil.getWord(toInt(game.getStart() + length)));
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> storeMemory(BASIC_PTR_LOMEM, DataUtil.getWord(toInt(game.getStart() + length)));
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> storeMemory(BASIC_PTR_HIMEM, DataUtil.getWord(0x00BEFF));
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> // Now execute it!
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> jmp(BASIC_RUN, false);
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> -------------------------------------
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> -B

that will be handy pretty soon,  but these are not basic programs, its the bootstrap process from ADT pro