mirror of
https://github.com/whscullin/apple2js.git
synced 2024-01-12 14:14:38 +00:00
4d80f9f28e
Initial checkin, still pretty rough around the edges.
381 lines
16 KiB
JavaScript
381 lines
16 KiB
JavaScript
/* -*- mode: JavaScript; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* Copyright 2010-2013 Will Scullin <scullin@scullinsteel.com>
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation. No representations are made about the suitability of this
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* software for any purpose. It is provided "as is" without express or
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* implied warranty.
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*/
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/*exported Thunderclock */
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function Thunderclock(mmu, io, slot)
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{
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var rom = [
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0x08,0x78,0x28,0x2c,0x58,0xff,0x70,0x05, // 00
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0x38,0xb0,0x01,0x18,0xb8,0x08,0x78,0x48,
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0x8a,0x48,0x98,0x48,0xad,0xff,0xcf,0x20, // 10
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0x1a,0xc8,0x68,0x68,0xba,0x8d,0xf8,0x07,
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0x0a,0x0a,0x0a,0x0a,0x8d,0x78,0x07,0x68, // 20
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0x68,0x68,0xa8,0x68,0x9a,0x09,0x04,0x48,
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0x28,0x98,0xac,0x78,0x07,0xae,0xf8,0x07, // 30
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0x29,0x7f,0x48,0x50,0x0e,0xb8,0xa5,0x36,
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0xd0,0x04,0xe4,0x37,0xf0,0x0a,0xa9,0x08, // 40
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0x85,0x38,0x38,0x90,0x16,0x4c,0x50,0xc9,
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0xa9,0x0b,0x85,0x36,0xa9,0x5e,0x9d,0xb8, // 50
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0x04,0xa9,0x0a,0x9d,0x38,0x04,0xa9,0x00,
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0x9d,0x38,0x05,0x68,0xc9,0x25,0xf0,0x5c, // 60
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0xc9,0x26,0xf0,0x58,0xc9,0x3c,0xf0,0x54,
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0xc9,0x3e,0xf0,0x50,0xc9,0x23,0xf0,0x4c, // 70
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0xc9,0x5e,0xf0,0x5a,0xc9,0x21,0xf0,0x4a,
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0xc9,0x2a,0xf0,0x52,0xa2,0x20,0xc9,0x2c, // 80
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0xf0,0x52,0xa2,0x28,0xc9,0x2e,0xf0,0x4c,
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0xa2,0x30,0xc9,0x2f,0xf0,0x46,0xae,0xf8, // 90
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0x07,0x48,0xbd,0xb8,0x04,0xc9,0x21,0xf0,
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0x41,0xc9,0x5e,0xf0,0x0e,0x68,0x29,0x1f, // A0
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0x0a,0x38,0xe9,0x01,0x9d,0x38,0x04,0xa9,
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0x5e,0xd0,0x23,0x68,0x38,0xe9,0x41,0x30, // B0
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0x20,0xc9,0x16,0x10,0x1c,0xaa,0xbd,0x8d,
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0xcb,0x4c,0x04,0xcb,0x9d,0x38,0x05,0x4c, // C0
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0x2f,0xc9,0xa9,0x20,0x20,0xb7,0xca,0xa9,
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0x08,0x20,0xb7,0xca,0xa9,0x21,0x9d,0xb8, // D0
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0x04,0x4c,0x2f,0xc9,0x8a,0x20,0xb7,0xca,
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0xd0,0xf7,0x68,0xc9,0x0d,0xf0,0x13,0xc9, // E0
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0x20,0xf0,0x44,0x29,0x0f,0x20,0xcf,0xca,
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0xf0,0x02,0xa9,0x0a,0x9d,0x38,0x07,0x18, // F0
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0x90,0x35,0x20,0xcf,0xca,0x7d,0x38,0x07,
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0x48,0xa9,0x09,0x9d,0x38,0x06,0x20,0xcf, // 00
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0xca,0x48,0xde,0x38,0x06,0xd0,0xf7,0xa9,
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0x0a,0x9d,0x38,0x06,0x68,0x20,0xcf,0xca,
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0xde,0x38,0x06,0xd0,0xf7,0xa9,0x10,0x20,
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0xb7,0xca,0xd0,0xb2,0xba,0x68,0x68,0x98,
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0x48,0x68,0x68,0xa9,0x8d,0x48,0x9a,0xae,
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0xf8,0x07,0xac,0x78,0x07,0xbd,0xb8,0x03,
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0xdd,0x38,0x07,0xd0,0x0c,0x1d,0x38,0x07,
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0xf0,0x07,0xc9,0x40,0xd0,0x03,0x99,0x80,
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0xc0,0x68,0xa8,0x68,0xaa,0x68,0x28,0x60,
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0x68,0xa9,0x18,0x20,0xb7,0xca,0xa9,0x08,
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0x20,0xb7,0xca,0xa9,0x09,0x9d,0x38,0x06,
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0x20,0xcf,0xca,0xc9,0x0a,0x30,0x02,0xa9,
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0x00,0x48,0xde,0x38,0x06,0xd0,0xf1,0x20,
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0xcf,0xca,0xc9,0x0d,0x30,0x02,0xa9,0x00,
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0x48,0xbd,0x38,0x05,0xf0,0x04,0xc9,0x23,
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0xd0,0x5e,0xa0,0x00,0x68,0xc9,0x0a,0x30,
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0x04,0xc8,0x38,0xe9,0x0a,0x48,0x98,0xa2,
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0x00,0x20,0xa6,0xca,0x68,0x20,0xa6,0xca,
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0xac,0xf8,0x07,0xb9,0x38,0x05,0xd0,0x2a,
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0xa9,0xaf,0x20,0xa8,0xca,0x68,0xa0,0x04,
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0x68,0x20,0xa6,0xca,0x68,0x20,0xa6,0xca,
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0x88,0xf0,0x07,0xa9,0x3b,0x20,0xa8,0xca,
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0xd0,0xee,0xa9,0xa0,0x8d,0x05,0x02,0xb9,
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0xf3,0xcb,0xf0,0x19,0x20,0xa8,0xca,0xc8,
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0xd0,0xf5,0xa9,0x00,0x48,0xa0,0x05,0x20,
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0xaf,0xca,0x68,0x20,0xa6,0xca,0x68,0x20,
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0xa6,0xca,0x88,0xd0,0xf2,0x4c,0x9a,0xca,
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0x68,0xaa,0x68,0x0a,0x0a,0xa8,0x8a,0x0a,
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0x0a,0x48,0xae,0xf8,0x07,0xbd,0x38,0x05,
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0xa2,0xa0,0xc9,0x3c,0xb0,0x02,0xa2,0xa2,
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0x8a,0xa2,0x00,0x20,0xa8,0xca,0xb9,0xa3,
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0xcb,0xc8,0x20,0xa8,0xca,0xc9,0xa0,0xd0,
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0xf5,0x68,0xa8,0xb9,0xbf,0xcb,0xc8,0x20,
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0xa8,0xca,0xc9,0xa0,0xd0,0xf5,0x68,0x20,
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0xa4,0xca,0x68,0x20,0xa6,0xca,0x20,0xb3,
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0xca,0xa0,0x03,0x68,0x20,0xa4,0xca,0xd0,
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0x03,0x20,0xa6,0xca,0x68,0x20,0xa6,0xca,
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0x88,0xf0,0x09,0xa9,0xba,0x20,0xa8,0xca,
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0x68,0x4c,0x29,0xca,0xac,0xf8,0x07,0xb9,
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0x38,0x05,0xc9,0x25,0xf0,0x04,0xc9,0x3e,
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0xd0,0x50,0xa0,0x41,0xad,0x0c,0x02,0xc9,
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0xa0,0xd0,0x02,0xa9,0x30,0x0a,0x0a,0x0a,
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0x0a,0x8d,0x20,0x02,0xad,0x0d,0x02,0x29,
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0x0f,0x0d,0x20,0x02,0xc9,0x12,0x30,0x02,
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0xa0,0x50,0xc9,0x00,0xd0,0x04,0xa9,0x12,
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0xd0,0x09,0xc9,0x13,0x30,0x16,0xf8,0x38,
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0xe9,0x12,0xd8,0xa2,0x0c,0x48,0x20,0xff,
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0xca,0x29,0x0f,0x20,0xa4,0xca,0x68,0x29,
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0x0f,0x20,0xa6,0xca,0xa2,0x14,0x20,0xb3,
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0xca,0x98,0x20,0xa8,0xca,0xa9,0x4d,0x20,
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0xa8,0xca,0x8a,0xa8,0xa9,0x8d,0x20,0xa8,
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0xca,0x4c,0x24,0xc9,0xf0,0x0d,0x09,0x30,
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0x09,0x80,0x9d,0x00,0x02,0xe8,0x60,0xa9,
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0xac,0xd0,0xf5,0xa9,0xa0,0xd0,0xf1,0x99,
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0x80,0xc0,0x09,0x04,0x99,0x80,0xc0,0x20,
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0xc7,0xca,0x49,0x04,0x99,0x80,0xc0,0x20,
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0xca,0xca,0x48,0x48,0x68,0x68,0x60,0x48,
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0xa9,0x04,0x9d,0xb8,0x06,0xa9,0x00,0x9d,
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0xb8,0x05,0xb9,0x80,0xc0,0x0a,0x7e,0xb8,
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0x05,0x68,0x48,0x29,0x01,0x99,0x80,0xc0,
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0x09,0x02,0x99,0x80,0xc0,0x49,0x02,0x99,
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0x80,0xc0,0x68,0x6a,0x48,0xde,0xb8,0x06,
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0xd0,0xe0,0x68,0xbd,0xb8,0x05,0x18,0x6a,
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0x6a,0x6a,0x6a,0x60,0x48,0xae,0xf8,0x07,
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0xbd,0x38,0x04,0x9d,0xb8,0x06,0x20,0x50,
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0xcb,0x68,0x48,0x20,0x4c,0xcb,0x68,0x48,
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0x49,0xf8,0x20,0x4c,0xcb,0xa2,0xa0,0x20,
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0x69,0xcb,0xa2,0xa0,0x20,0x69,0xcb,0xa0,
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0x18,0x20,0x60,0xcb,0xae,0xf8,0x07,0xde,
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0xb8,0x06,0xd0,0xda,0x68,0xa0,0xbc,0xca,
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0xd0,0xfd,0x88,0xd0,0xfa,0x4c,0x2f,0xc9,
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0x48,0x90,0x05,0x20,0x50,0xcb,0xf0,0x03,
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0x20,0x59,0xcb,0x68,0x0a,0xd0,0xf1,0x60,
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0xa2,0x50,0x20,0x69,0xcb,0xa0,0x28,0xd0,
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0x07,0xa2,0x18,0x20,0x69,0xcb,0xa0,0x44,
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0xa2,0x13,0xca,0xd0,0xfd,0x88,0xd0,0xf8,
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0x60,0xac,0x78,0x07,0xa9,0x20,0x99,0x80,
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0xc0,0xea,0xea,0xea,0x49,0x20,0x99,0x80,
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0xc0,0xea,0xea,0xea,0x49,0x20,0x99,0x80,
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0xc0,0xea,0xea,0xea,0x49,0x20,0x99,0x80,
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0xc0,0xca,0xd0,0xe0,0x60,0x64,0xe4,0x24,
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0xa4,0x14,0x94,0x54,0xd4,0x74,0xf4,0x34,
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0xb4,0x04,0x84,0x44,0xc4,0x2c,0x3c,0x5c,
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0x4c,0x1c,0x0c,0x53,0x55,0x4e,0x20,0x4d,
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0x4f,0x4e,0x20,0x54,0x55,0x45,0x20,0x57,
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0x45,0x44,0x20,0x54,0x48,0x55,0x20,0x46,
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0x52,0x49,0x20,0x53,0x41,0x54,0x20,0x45,
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0x52,0x52,0x20,0x4a,0x41,0x4e,0x20,0x46,
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0x45,0x42,0x20,0x4d,0x41,0x52,0x20,0x41,
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0x50,0x52,0x20,0x4d,0x41,0x59,0x20,0x4a,
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0x55,0x4e,0x20,0x4a,0x55,0x4c,0x20,0x41,
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0x55,0x47,0x20,0x53,0x45,0x50,0x20,0x4f,
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0x43,0x54,0x20,0x4e,0x4f,0x56,0x20,0x44,
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0x45,0x43,0x20,0xae,0xb0,0xb0,0xb0,0x00,
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0xae,0xb0,0xb0,0xb0,0x00,0xa0,0xa0,0xc1,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
|
|
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff
|
|
];
|
|
|
|
var LOC = {
|
|
CONTROL: 0x80
|
|
};
|
|
|
|
var FLAGS = {
|
|
DATA: 0x01,
|
|
CLOCK: 0x02,
|
|
STROBE: 0x04
|
|
};
|
|
|
|
function _init() {
|
|
LOC.CONTROL += slot * 0x10;
|
|
}
|
|
|
|
var auxRomFn = {
|
|
start: function auxRom_start() {
|
|
return 0xc8;
|
|
},
|
|
end: function auxRom_end() {
|
|
return 0xcf;
|
|
},
|
|
read: function auxRom_read(page, off) {
|
|
return rom[(page - 0xc8) * 256 + off];
|
|
},
|
|
write: function auxRom_write() {}
|
|
};
|
|
|
|
var _command = 0;
|
|
var _bits = [];
|
|
|
|
function _calcbits() {
|
|
function shift(val) {
|
|
for (var idx = 0; idx < 4; idx++) {
|
|
_bits.push((val & 0x08) !== 0);
|
|
val <<= 1;
|
|
}
|
|
}
|
|
function shiftBCD(val) {
|
|
shift(parseInt(val / 10, 10));
|
|
shift(parseInt(val % 10, 10));
|
|
}
|
|
|
|
var now = new Date();
|
|
var day = now.getDate();
|
|
var weekday = now.getDay();
|
|
var month = now.getMonth() + 1;
|
|
var hour = now.getHours();
|
|
var minutes = now.getMinutes();
|
|
var seconds = now.getSeconds();
|
|
|
|
_bits = [];
|
|
shift(month);
|
|
shift(weekday);
|
|
shiftBCD(day);
|
|
shiftBCD(hour);
|
|
shiftBCD(minutes);
|
|
shiftBCD(seconds);
|
|
}
|
|
|
|
function _access(off, val) {
|
|
switch (off) {
|
|
case LOC.CONTROL:
|
|
if (val !== undefined) {
|
|
if (val & FLAGS.STROBE) {
|
|
if ((_command & 0x78) == 0x18) {
|
|
_calcbits();
|
|
}
|
|
}
|
|
_command = val;
|
|
} else {
|
|
if (_bits.pop()) {
|
|
_command |= 0x80;
|
|
} else {
|
|
_command &= 0x7f;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
return _command;
|
|
}
|
|
|
|
_init();
|
|
|
|
return {
|
|
start: function thunderclock_start() {
|
|
io.registerSwitches(this, LOC);
|
|
return 0xc0 + slot;
|
|
},
|
|
end: function thunderclock_end() {
|
|
return 0xc0 + slot;
|
|
},
|
|
read: function thunderclock_read(page, off) {
|
|
mmu.auxRom(slot, auxRomFn);
|
|
|
|
return rom[off];
|
|
},
|
|
write: function thunderclock_write() {
|
|
mmu.auxRom(slot, auxRomFn);
|
|
},
|
|
ioSwitch: function thunderclock_ioSwitch(off, val) {
|
|
return _access(off, val);
|
|
}
|
|
};
|
|
}
|
|
|