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https://github.com/holub/mame
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55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
// license:BSD-3-Clause
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// copyright-holders:Curt Coder
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/*********************************************************************
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formats/naslite_dsk.c
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NASLite 1.72MB with funky interleaving format
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*********************************************************************/
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#include "emu.h"
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#include "formats/naslite_dsk.h"
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naslite_format::naslite_format() : upd765_format(formats)
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{
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}
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const char *naslite_format::name() const
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{
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return "NASLite";
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}
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const char *naslite_format::description() const
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{
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return "NASLite disk image";
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}
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const char *naslite_format::extensions() const
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{
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return "img";
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}
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const naslite_format::format naslite_format::formats[] = {
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{
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floppy_image::FF_35, floppy_image::DSHD, floppy_image::MFM,
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1000, 21, 82, 2, 512, {}, -1, { 0x01, 0x0c, 0x02, 0x0d, 0x03, 0x0e, 0x04, 0x0f, 0x05, 0x10, 0x06, 0x11, 0x07, 0x12, 0x08, 0x13, 0x09, 0x14, 0x0a, 0x15, 0x0b }, 80, 50, 22, 0xc
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},
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{}
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};
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void naslite_format::build_sector_description(const format &f, UINT8 *sectdata, desc_s *sectors, int track, int head) const
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{
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for(int i=0; i<f.sector_count; i++) {
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int cur_offset = 0;
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for(int j=0; j<f.sector_count; j++)
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if(f.per_sector_id[j] < f.per_sector_id[i])
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cur_offset += f.sector_base_size ? f.sector_base_size : f.per_sector_size[j];
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sectors[i].data = sectdata + cur_offset;
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sectors[i].size = f.sector_base_size ? f.sector_base_size : f.per_sector_size[i];
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sectors[i].sector_id = f.per_sector_id[(i + (track * 0x0a) + (head * 0x11)) % f.sector_count];
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}
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}
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const floppy_format_type FLOPPY_NASLITE_FORMAT = &floppy_image_format_creator<naslite_format>;
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