Routines
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1954: load_nibbles: Read low nibble of four bytes from address in DE to word at address in HL.
Used by the routines at load_next_nibbles, check_page and download_data.
load_nibbles 1954 LD A,(DE) Load next byte into A.
1955 INC HL HL to high byte.
1956 RLD Rotate low nibble of A into high byte.
1958 INC DE Load next byte into A.
1959 LD A,(DE)
195A RLD Rotate low nibble of A into high byte.
195C DEC HL HL to low byte.
195D INC DE Load next byte into A.
195E LD A,(DE)
195F RLD Rotate low nibble of A into low byte.
1961 INC DE Load next byte into A.
1962 LD A,(DE)
1963 RLD Rotate low nibble of A into low byte.
1965 RET Return.
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