mirror of
https://github.com/SEPPDROID/Digital-Research-Source-Code.git
synced 2025-10-23 00:14:25 +00:00
38 lines
1.8 KiB
C
38 lines
1.8 KiB
C
/****************************************************************************/
|
|
/* */
|
|
/* B A S E P A G E . H */
|
|
/* ------------------- */
|
|
/* */
|
|
/* This file contains a definition of the CP/M basepage structure, */
|
|
/* b_page. */
|
|
/* */
|
|
/* NOTE: In the portable CP/M environment, it is NOT guaranteed */
|
|
/* that the location of the base page is known at link-edit time */
|
|
/* (as it is, for example, in CP/M-80 and CP/M-86.) Instead, a */
|
|
/* pointer to the current basepage is delivered by the BDOS */
|
|
/* to each new program which is run. This pointer, _base, is */
|
|
/* initialized by the C startup function (startup.s) and is */
|
|
/* available to C programs as an external. */
|
|
/* */
|
|
/* This file has been modified to live with the BDOS definitions. */
|
|
/* */
|
|
/****************************************************************************/
|
|
|
|
struct b_page
|
|
{
|
|
XADDR ltpa; /* Low TPA address */
|
|
XADDR htpa; /* High TPA address */
|
|
XADDR lcode; /* Start address of code seg*/
|
|
long codelen; /* Code segment length */
|
|
XADDR ldata; /* Start address of data seg*/
|
|
long datalen; /* Data segment length */
|
|
XADDR lbss; /* Start address of bss seg */
|
|
long bsslen; /* Bss segment length */
|
|
long freelen; /* Free segment length */
|
|
char resvd1[20]; /* Reserved area */
|
|
struct fcb fcb2; /* Second basepage FCB */
|
|
struct fcb fcb1; /* First basepage FCB */
|
|
char buff[128]; /* Default DMA buffer, */
|
|
/* command line tail */
|
|
};
|