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Table of contents The zx-state file format
Block types
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ZXSTBETA128Beta 128 disk interface from Technology Research UK Ltd. A clone of this interface is also used in the Russian Pentagon and Scorpion machines. Any blocks specifying which disk files are in which drive will follow this one. // Beta 128 disk interface used by the Pentagon and Scorpion #define ZXSTBETAF_CONNECTED 1 #define ZXSTBETAF_CUSTOMROM 2 #define ZXSTBETAF_PAGED 4 #define ZXSTBETAF_AUTOBOOT 8 #define ZXSTBETAF_SEEKLOWER 16 #define ZXSTBETAF_COMPRESSED 32 typedef struct _tagZXSTBETA128 { ZXSTBLOCK blk; DWORD dwFlags; BYTE chNumDrives; BYTE chSysReg; BYTE chTrackReg; BYTE chSectorReg; BYTE chDataReg; BYTE chStatusReg; BYTE chRomData[1]; } ZXSTBETA128, *LPZXSTBETA128; Membersblk
The block header. The block id is ZXSTBID_BETA128 ('B', '1', '2', '8').
dwFlags
Various flags. This can be a combination of:
chNumDrives
The number of disk drives connected (1-4).
chSysReg
The last value written to the Beta 128's system register (port $ff).
chTrackReg
The current value of the WD179x FDC's track register (port $3f).
chSectorReg
The current value of the WD179x FDC's sector register (port $5f).
chDataReg
The current value of the WD179x FDC's data register (port $7f).
chStatusReg
The current value of the WD179x FDC's status register (port $1f).
chRomData
A Zlib compressed or uncompressed custom TR-DOS ROM (if one was installed). The uncompressed ROM size is always 16,384 bytes.
When loading Zlib compressed ROMs, the compressed size can be obtained by:
RemarksAny ZXSTBETADISK blocks specifying which disk files are in which drives will follow this one. Revision historyAvailable since version 1.2 |
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