DD_L_READ

Categories:

• spectrum
• spectrumAPI

Function	Address	Description
DD_L_READ	0190	Low level uPD765A read command

Synopsys

Low level uPD765A read command.

• Read data.
• Read deleted data.
• Read a track.
• Writes commands.
• Reads data.
• Reads results.
• Motor must be running.

Entry Parameters

Register	Content
HL	Address of parameter block

Exit Parameters

HL = Address of result buffer in page 7

Always:

AF BC DE IX corrupt, all other registers preserved.

Parameter Block Format

Bytes		Length	Content
0	0	1	Page for 0xC000…0xFFFF
1	2	2	Address of buffer
3	4	2	Number of bytes to transfer
5	5	1	Number of command bytes n
6	5+n	n	Command bytes