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- /*
- * Definition of the UniTerm parameter block
- * Donated to the Public Domain by Simon Poole
- */
-
- /* These definitions assume:
- * - int : 16 bits
- * - long : 32 bits
- * - pointer : 32 bits
- * - struct fields are ordered from low to high
- * memory, without any additional alignment
- * bytes (PBLength is at the lowest address,
- * PBClipAddress at the highest)
- */
-
- typedef struct {
- long ClipLen; /* current length of clip */
- char *ClipBuffer; /* pointer to the buffer itsself */
- } ClipStruct; /* UniTerm's clipboard */
-
- typedef struct {
- int PBLength; /* size of parameter block, currently 54 */
- long PBFlags; /* reserved for future expansion */
- long PBTextScreen; /* address of the screen in text mode */
- long PBGraphScreen; /* address of the graphic screen (if allocated) */
- long PBScreenBuffer; /* address of buffer for screen operations 32'000 bytes */
- char *PBTransBuffer; /* pointer to buffer used for file transfer */
- long PBTransSize; /* size of above buffer */
- long PBTransPtrAdr; /* current position in the buffer */
- char *PBHistBuffer; /* pointer to history buffer */
- long PBHistSize; /* size of above buffer */
- long *PBHistBotAdr; /* pointer to the address (NOT offset) of current hist. bottom */
- long *PBHistPtrAdr; /* pointer to the address (NOT offset) of current hist. top */
- long PBClipSize; /* maximum size of clipboard */
- ClipStruct *PBClipRecAdr; /* pointer to the clipboard structure */
- } UniStruct; /* UniTerm's parameter block */
-
- /*
- * When a program is started, the current screen is either PBTextScreen
- * or PBGraphScreen, a copy of the contents of that screen is in
- * PBScreenBuffer.
- *
- * For historical reasons the addresses pointed to by PBHistBotAdr and
- * PBHistPtrAdr are not offsets from PBHistBuffer, but are absolute
- * memory addresses.
- *
- * New fields will be added at the end of the parameter block, so the
- * application only has to check PBLength to see if a field is present
- * or not.
- */
-