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56 lines
800 B
Plaintext
56 lines
800 B
Plaintext
// target-independent things
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#if not(ARCH_I80)
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#warn stdlib_i80 module should be only used on Intel 8080-like targets
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#endif
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#pragma zilog_syntax
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import i80_math
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macro asm void poke(word const addr, byte a) {
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! LD (addr), A
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}
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macro asm byte peek(word const addr) {
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! LD A, (addr)
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}
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macro asm void disable_irq() {
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DI
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}
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macro asm void enable_irq() {
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EI
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}
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asm byte hi_nibble_to_hex(byte a) {
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#if CPUFEATURE_GAMEBOY
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SWAP A
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#else
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RRA
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RRA
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RRA
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RRA
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#endif
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? JP lo_nibble_to_hex
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}
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asm byte lo_nibble_to_hex(byte a) {
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AND $F
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ADD A,$30
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CP $3A
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#if CPUFEATURE_GAMEBOY | CPUFEATURE_Z80
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JR C,_lo_nibble_to_hex_lbl
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#else
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JP C,_lo_nibble_to_hex_lbl
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#endif
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ADD A,$7
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_lo_nibble_to_hex_lbl:
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RET
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}
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macro asm void panic() {
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? CALL _panic
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}
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