Apple Logic Board Información técnica descargar pdf (Pagina 44)

8 — Delete segment

function, segment name, error status, unused, unused

This function deletes the segment named. This makes the

space in extended RAM available for other uses.

Error status:

0 = success

1 = illegal function

2 = variable not found

8 = segment not found

9 = illegal segment name

9 — Connect blocks

function, block selection, error status, unused, unused

This function identifies new blocks of memory for use by

RAMEXPAND. The block selection parameter was described

previously (ATTACHING MEMORY BLOCKS, section II.E.)

COMMON VALUES OF BLOCK SELECTION PARAMETER:

The following table gives some common block selection

parameters for a variety of RAM boards and situations. These

include cases where space is to be reserved for BASIC, DOS and

RAMEXPAND in the Saturn 32K, 64K and 128K RAM boards.

BOARD USE ALL RESERVE SPACE FOR:

OF IT

BASIC DOS DOS+RAMEXP.

+RAMEXPAND +RAMEXPAND + BASIC

16K 40+sl N/A N/A N/A

32K 120+sl 48+sl 40+sl 32+sl

64K 1016+sl * 432+sl * 424+sl * 416+sl

760+s1 760+sl 760+sl

128K 4088+sl * 432+sl * 424+sl * 416+sl

3832+s1 3832+sl 3832+sl

* note: in order to attach these blocks, two consecutive connect

function calls are required, the first to specify the blocks to be

used in the first “32K section”, and the second, to specify blocks

in the rest of the card.

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Apple Logic Board Información técnica Pagina 44