203 lines
7.1 KiB
Go
203 lines
7.1 KiB
Go
package script
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import (
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)
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var InstrMap map[byte]*Instruction
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func init() {
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InstrMap = make(map[byte]*Instruction)
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for _, i := range Instructions {
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InstrMap[i.Opcode] = i
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}
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}
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var Instructions []*Instruction = []*Instruction{
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&Instruction{ 0x80, 0, 0, 0, "play_beep"},
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&Instruction{ 0x81, 0, 0, 0, "halt"},
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&Instruction{ 0x82, 0, 0, 0, "tape_nmi_shenanigans"},
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&Instruction{ 0x83, 0, 0, 0, "tape_wait"},
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// Jump to the inline word, in the VM
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&Instruction{ 0x84, 0, 2, 0, "jump_abs"},
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// Call a routine at the inline word, in the VM
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&Instruction{ 0x85, 0, 2, 0, "call_abs"},
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// Return from a previous call
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&Instruction{ 0x86, 0, 0, 0, "return"},
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&Instruction{ 0x87, 0, 0, 0, "loop"},
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&Instruction{ 0x88, 0, 0, 0, "play_sound"},
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&Instruction{ 0x89, 3, 0, 0, ""},
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&Instruction{ 0x8A, 0, 2, 0, "pop_string_to_addr"},
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&Instruction{ 0x8B, 1, 0, 0, ""},
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&Instruction{ 0x8C, 0, 0, 1, "string_length"},
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&Instruction{ 0x8D, 0, 0, 1, "string_to_int"},
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&Instruction{ 0x8E, 0, 0, 16, "string_concat"},
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&Instruction{ 0x8F, 0, 0, 1, "strings_equal"},
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&Instruction{ 0x90, 0, 0, 1, "strings_not_equal"},
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&Instruction{ 0x91, 0, 0, 1, "string_less_than"},
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&Instruction{ 0x92, 0, 0, 1, "string_less_than_equal"},
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&Instruction{ 0x93, 0, 0, 1, "string_greater_than_equal"},
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&Instruction{ 0x94, 0, 0, 1, "string_greater_than"},
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// Sets some tape NMI stuff if the byte at $0740 is not zero.
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&Instruction{ 0x95, 1, 0, 0, "tape_nmi_shenigans_set"},
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&Instruction{ 0x96, 0, 2, 0, "set_word_4E"},
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&Instruction{ 0x97, 2, 0, 0, ""},
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&Instruction{ 0x98, 1, 0, 0, ""},
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&Instruction{ 0x99, 1, 0, 0, ""},
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&Instruction{ 0x9A, 0, 0, 0, ""},
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&Instruction{ 0x9B, 0, 0, 0, "halt"},
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&Instruction{ 0x9C, 0, 0, 0, "toggle_44FE"},
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&Instruction{ 0x9D, 2, 0, 0, "something_tape"},
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&Instruction{ 0x9E, 2, 0, 0, ""},
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&Instruction{ 0x9F, 6, 0, 0, ""},
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&Instruction{ 0xA0, 2, 0, 1, ""},
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&Instruction{ 0xA1, 1, 0, 0, ""},
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&Instruction{ 0xA2, 1, 0, 0, "buffer_palette"},
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// Possibly a sprite setup routine. loads up some CHR data and some palette
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// data.
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&Instruction{ 0xA3, 1, 0, 0, "sprite_setup"},
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&Instruction{ 0xA4, 3, 0, 0, ""},
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&Instruction{ 0xA5, 1, 0, 0, "set_470A"},
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&Instruction{ 0xA6, 1, 0, 0, "set_470B"},
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// jump to the inline address, in assembly, not in the VM
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// (built-in ACE, lmao)
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&Instruction{ 0xA7, 0, 0, 0, "call_asm"},
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&Instruction{ 0xA8, 5, 0, 0, ""},
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&Instruction{ 0xA9, 1, 0, 0, ""},
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&Instruction{ 0xAA, 1, 0, 0, ""},
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&Instruction{ 0xAB, 1, 0, 0, "long_call"},
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&Instruction{ 0xAC, 0, 0, 0, "long_return"},
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&Instruction{ 0xAD, 1, 0, 1, "absolute"},
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&Instruction{ 0xAE, 1, 0, 1, "compare"},
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&Instruction{ 0xAF, 0, 0, 1, ""},
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&Instruction{ 0xB0, 1, 0, 16, ""},
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&Instruction{ 0xB1, 1, 0, 16, "to_hex_string"},
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&Instruction{ 0xB2, 0, 0, 1, ""},
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&Instruction{ 0xB3, 7, 0, 0, ""}, // possible 16-bit inline?
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&Instruction{ 0xB4, 0, 0, 0, ""},
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&Instruction{ 0xB5, 0, 0, 0, ""},
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&Instruction{ 0xB6, 0, 0, 0, ""},
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// Uses the inline word as a pointer, and pushes the byte value at that
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// address to the stack.
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&Instruction{ 0xB7, 0, 2, 0, "deref_ptr_inline"},
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// Pushes the inline word to the stack
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&Instruction{ 0xB8, 0, 2, 0, "push_word"},
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&Instruction{ 0xB9, 0, 2, 0, "push_word_indexed"},
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&Instruction{ 0xBA, 0, 2, 0, "push"},
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&Instruction{ 0xBB, 0, -1, 0, "push_data"},
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&Instruction{ 0xBC, 0, 2, 0, "push_string_from_table"},
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// Pops a byte off the stack and stores it at the inline address.
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&Instruction{ 0xBD, 0, 2, 0, "pop"},
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&Instruction{ 0xBE, 0, 2, 0, "write_to_table"},
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&Instruction{ 0xBF, 0, 2, 0, "jump_not_zero"},
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// One byte off stack; jumps to inline if byte is zero
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&Instruction{ 0xC0, 1, 2, 0, "jump_zero"},
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&Instruction{ 0xC1, 1, -2, 0, "jump_switch"},
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&Instruction{ 0xC2, 1, 0, 1, "equals_zero"},
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&Instruction{ 0xC3, 2, 0, 1, "and_a_b"},
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&Instruction{ 0xC4, 2, 0, 1, "or_a_b"},
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&Instruction{ 0xC5, 2, 0, 1, "equal"},
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// Two bytes off stack; result pushed back; 1 if A == B, 0 if A != B
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&Instruction{ 0xC6, 2, 0, 1, "not_equal"},
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&Instruction{ 0xC7, 2, 0, 1, "less_than"},
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&Instruction{ 0xC8, 2, 0, 1, "less_than_equal"},
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&Instruction{ 0xC9, 2, 0, 1, "greater_than"},
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&Instruction{ 0xCA, 2, 0, 1, "greater_than_equal"},
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&Instruction{ 0xCB, 2, 0, 1, "sum"},
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&Instruction{ 0xCC, 2, 0, 1, "subtract"},
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&Instruction{ 0xCD, 2, 0, 1, "multiply"},
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&Instruction{ 0xCE, 2, 0, 1, "signed_divide"},
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&Instruction{ 0xCF, 1, 0, 1, "negate"},
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&Instruction{ 0xD0, 1, 0, 1, "modulus"},
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&Instruction{ 0xD1, 2, 0, 1, "expansion_controller"},
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&Instruction{ 0xD2, 2, 0, 1, ""},
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&Instruction{ 0xD3, 2, 0, 16, ""},
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&Instruction{ 0xD4, 3, 0, 0, ""},
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&Instruction{ 0xD5, 1, 0, 0, "wait_for_tape"},
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&Instruction{ 0xD6, 1, 0, 16, "truncate_string"},
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&Instruction{ 0xD7, 1, 0, 16, "trim_string"},
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&Instruction{ 0xD8, 1, 0, 16, "trim_string_start"},
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&Instruction{ 0xD9, 2, 0, 16, "trim_string_start"},
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&Instruction{ 0xDA, 1, 0, 16, "to_int_string"},
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&Instruction{ 0xDB, 3, 0, 0, ""},
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&Instruction{ 0xDC, 5, 0, 0, ""},
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&Instruction{ 0xDD, 5, 0, 0, ""},
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&Instruction{ 0xDE, 3, 0, 0, ""},
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&Instruction{ 0xDF, 3, 0, 0, ""},
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&Instruction{ 0xE0, 2, 0, 1, "signed_divide"},
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&Instruction{ 0xE1, 4, 0, 0, ""},
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&Instruction{ 0xE2, 7, 0, 0, "setup_sprite"},
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// Pops a word off the stack, uses it as a pointer, and pushes the byte
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// value at that address to the stack.
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&Instruction{ 0xE3, 1, 0, 1, "deref_ptr_stack"},
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&Instruction{ 0xE4, 2, 0, 0, "swap_ram_bank"},
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&Instruction{ 0xE5, 1, 0, 0, "disable_sprite"},
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&Instruction{ 0xE6, 1, 0, 0, "tape_nmi_setup"},
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&Instruction{ 0xE7, 7, 0, 0, ""},
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&Instruction{ 0xE8, 1, 0, 0, "setup_tape_nmi"},
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&Instruction{ 0xE9, 0, 1, 0, "setup_loop"},
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&Instruction{ 0xEA, 0, 0, 0, "string_write_to_table"},
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&Instruction{ 0xEB, 4, 0, 0, ""},
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&Instruction{ 0xEC, 2, 0, 0, "scroll"},
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&Instruction{ 0xED, 1, 0, 0, "disable_sprites"},
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&Instruction{ 0xEE, 1, -3, 0, "call_switch"},
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&Instruction{ 0xEF, 6, 0, 0, ""},
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&Instruction{ 0xF0, 0, 0, 0, "disable_sprites"},
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&Instruction{ 0xF1, 4, 0, 0, ""},
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&Instruction{ 0xF2, 0, 0, 0, "halt"},
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&Instruction{ 0xF3, 0, 0, 0, "halt"},
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&Instruction{ 0xF4, 0, 0, 16, "halt"},
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&Instruction{ 0xF5, 1, 0, 1, "halt"},
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&Instruction{ 0xF6, 1, 0, 0, "halt"},
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&Instruction{ 0xF7, 0, 0, 0, "halt"},
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&Instruction{ 0xF8, 2, 0, 0, "halt"},
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&Instruction{ 0xF9, 0, 0, 1, ""},
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&Instruction{ 0xFA, 0, 0, 1, ""},
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&Instruction{ 0xFB, 1, 0, 0, "jump_arg_a"},
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&Instruction{ 0xFC, 2, 0, 1, ""},
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&Instruction{ 0xFD, 0, 0, 16, "halt"},
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&Instruction{ 0xFE, 4, 0, 0, ""},
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// code handler is $FFFF
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&Instruction{ 0xFF, 0, 0, 0, "break_engine"},
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}
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type Instruction struct {
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Opcode byte
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ArgCount int // stack arguments
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OpCount int // inline operands. length in bytes.
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// -1: nul-terminated
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// -2: first byte is count, followed by that number of words
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// -3: like -2, but with one additional word
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RetCount int // return count
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Name string
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}
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func (i Instruction) String() string {
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if i.Name != "" {
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//return fmt.Sprintf("$%02X_%s", i.Opcode, i.Name)
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return i.Name
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}
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//return fmt.Sprintf("$%02X_unknown", i.Opcode)
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return "unknown"
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}
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