Zilog ZUSBOPTS Uživatelský manuál stáhnout pdf (Strana 215)

100

101

UM017105-0511 Startup Files

Zilog Developer Studio II – ZNEO™

User Manual

187

Startup Files

The start-up or C run-time initialization file is an assembly program that performs required

start-up functions and then calls

main, which is the C entry point. The start-up program

performs the following C run-time initializations:

1. Initializes the stack pointer and stack overflow register.

2. Initializes the external interface if enabled (see the description of the Configure Target

Dialog Box on page 76).

3. Clears the

_Near and _Far uninitialized variables to zero.

4. Sets the initialized

_Near and _Far variables to their initial value from _Erom.

5. Allocate space for interrupt vectors.

6. Allocate space for the

errno variable used by the C run-time libraries.

Table 14 lists the start-up files provided with the ZNEO C-Compiler.

Table 14. ZNEO Startup Files

Name Description

lib\zilog\startups.obj C start-up object file for small model.

src\boot\common\startups.asm C start-up source file for small model.

lib\zilog\startupl.obj C start-up object file for large model.

src\boot\common\startupl.asm C start-up source file for large model.

lib\zilog\startupexkl.obj C start-up object file (large model) with external interface set up for

devices with Port K.

lib\zilog\startupexl.obj C start-up object file (large model) with external interface set up for

devices without Port K.

src\boot\common\startupexl.asm C start-up source file (large model) with external interface set up.

lib\zilog\startupexks.obj C start-up object file (small model) with external interface set up for

devices with Port K.

lib\zilog\startupexs.obj C start-up object file (small model) with external interface set up for

devices without Port K.

src\boot\common\startupexs.asm C start-up source file (small model) with external interface set up.

1 2 ... 210 211 212 213 214 215 216 217 218 219 220 ... 519 520

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