- ページ 9

コントローラー AMD Am7990のPDF リファレンス・マニュアルをオンラインで閲覧またはダウンロードできます。AMD Am7990 12 ページ。 Ethernet/cheapernet family

ページを印刷する

INTLOOP

Internal loop test to verify packet

transmission/reception, chaining, and

CRCs. It also verifies promiscuous,

normal and collision-test modes.

EXTLOOP -

Verifies that packets can go out on the

Ethernet cable and be received in both

the promiscuous and normal mode. It

also verifies disabling of the receiver or

transmitter.

ETHERTST -

Allows the user to configure the size of

ring buffers and transmit packets, it

then transmits packets and accumu-

lates statistics on number of trans-

missions, receptions, and errors on an

individual basis.

ECHO

UTILS

DEF

BUFFER

SYSTEM

When executed on a second LANCE

board it switches source and destina-

tion addresses and retransmits any

packets received. It also accumulates

statistics.

A set of general purpose utility mod-

ules that build initialization blocks,

build ring buffers, calculate or verify

CRCs, and reads or writes CSR regis-

ters (5600 bytes).

Definitions of structures for initblock,

ring buffers, etc.

Allocate RAM space.

Character read/write routine, interrupt

handler in 8086 assembly language

(only 144 bytes of code).

The last 4 modules described above are modules for

writing code for the LANCE. They can easily be studied

and understood. The .DOC file on the diskette provides

additional comments on programming techniques for

the LANCE and also for porting this code to another

hardware configuration.

The code for the test modules show how to call the

various utility functions to incorporate them into another

program. Studying CSRTST & INITTST in conjuction

with UTILs, DEF and 10 will give the programmer a

good insight into the entire program.

Embedded into the code are many compiler conditional

print statements that trace the execution of the pro-

gram. These are very useful for debugging; however,

they have a penalty of using more RAM space. The

following is a tabulation of memory utilization.

Code space without ETHERTST & ECHO 21 K bytes

Entire Code Space

26K bytes

Code Space with Debug Trace

40K bytes

RAM Space Max

16K bytes

RAM Space w/o ETHERTST & ECHO

6K bytes

This code space will vary depending upon the C com-

piler used.

There is a user manual which is the specification for

this software package which is available in C source

code on 3 IBM PC diskett9S.

AVAILABILITY

- Board Purchase

- Board Artwork/Films

- Ethernet Software

Contact your local AMD Sales

office for availability and/or

pricing.

ETHERNET PROTOCOL SUPPORT

(TRANSPORT LAYER)

Contact your local AMD Sales Office for current

arrangements.

The following software firm has Transport layer soft-

ware available:

SYROS

2810 South Evergreen

Tempe, AZ 85282

(602) 897-2399

III. MISCELLANEOUS COMPONENTS

SOURCES & CONTACTS

A) DC-DC Power Converters

Partial List-Can use any equivalent IEEE 802.3

(10Base5, 10Base2) Compatible

Power Transformer.

Manufacturer

Pulse Engineering

P. O. Box 12235

Ordering Part No,

PE64430 (Ethernet)

San Diego, CA 92112 PE64381 (Cheapernet)

Tel. (619) 268-2400

Reliability Inc.

P. O. Box 218370

Houston, TX 77218

Tel. (713) 492-0550

TWX 910-881-1739

2E12R9 (Ethernet)

2VP5U9 (Cheapernet)

B) Isolation Coupling Transformers

Partial list-Can use any equivalent IEEE 802.3

(10Base5, 10BASE2) compatible Iso-

lation Transformers.

Manufacturer

Ordering Part No.

Pulse Engineering

64102 or 64107

P.O. Box 12235

San Diego, CA 92112

Tel. (619) 268-2400

C) 20MHz Fundamental Mode Crystal

Partial list-Can use any equivalent crystal to the

specifications listed in the Am7992B

Data Sheet (page 4).

Manufacturer

Reeves-Hoffman

400 W. North Street

Carlisle, PA 17013

(717) 243-5929

Ordering Part No.

04-20423-312

AMD does not manufacture or sell any of the above

items. Interested customers should call the manufac-

turer directly for the location of the nearest representa-

tives.

INTLOOP

Internal loop test to verify packet

transmission/reception, chaining, and

CRCs. It also verifies promiscuous,

normal and collision-test modes.

EXTLOOP -

Verifies that packets can go out on the

Ethernet cable and be received in both

the promiscuous and normal mode. It

also verifies disabling of the receiver or

transmitter.

ETHERTST -

Allows the user to configure the size of

ring buffers and transmit packets, it

then transmits packets and accumu-

lates statistics on number of trans-

missions, receptions, and errors on an

individual basis.

ECHO

UTILS

DEF

BUFFER

SYSTEM

When executed on a second LANCE

board it switches source and destina-

tion addresses and retransmits any

packets received. It also accumulates

statistics.

A set of general purpose utility mod-

ules that build initialization blocks,

build ring buffers, calculate or verify

CRCs, and reads or writes CSR regis-

ters (5600 bytes).

Definitions of structures for initblock,

ring buffers, etc.

Allocate RAM space.

Character read/write routine, interrupt

handler in 8086 assembly language

(only 144 bytes of code).

The last 4 modules described above are modules for

writing code for the LANCE. They can easily be studied

and understood. The .DOC file on the diskette provides

additional comments on programming techniques for

the LANCE and also for porting this code to another

hardware configuration.

The code for the test modules show how to call the

various utility functions to incorporate them into another

program. Studying CSRTST & INITTST in conjuction

with UTILs, DEF and 10 will give the programmer a

good insight into the entire program.

Embedded into the code are many compiler conditional

print statements that trace the execution of the pro-

gram. These are very useful for debugging; however,

they have a penalty of using more RAM space. The

following is a tabulation of memory utilization.

Code space without ETHERTST & ECHO 21 K bytes

Entire Code Space

26K bytes

Code Space with Debug Trace

40K bytes

RAM Space Max

16K bytes

RAM Space w/o ETHERTST & ECHO

6K bytes

This code space will vary depending upon the C com-

piler used.

There is a user manual which is the specification for

this software package which is available in C source

code on 3 IBM PC diskett9S.

AVAILABILITY

- Board Purchase

- Board Artwork/Films

- Ethernet Software

Contact your local AMD Sales

office for availability and/or

pricing.

ETHERNET PROTOCOL SUPPORT

(TRANSPORT LAYER)

Contact your local AMD Sales Office for current

arrangements.

The following software firm has Transport layer soft-

ware available:

SYROS

2810 South Evergreen

Tempe, AZ 85282

(602) 897-2399

III. MISCELLANEOUS COMPONENTS

SOURCES & CONTACTS

A) DC-DC Power Converters

Partial List-Can use any equivalent IEEE 802.3

(10Base5, 10Base2) Compatible

Power Transformer.

Manufacturer

Pulse Engineering

P. O. Box 12235

Ordering Part No,

PE64430 (Ethernet)

San Diego, CA 92112 PE64381 (Cheapernet)

Tel. (619) 268-2400

Reliability Inc.

P. O. Box 218370

Houston, TX 77218

Tel. (713) 492-0550

TWX 910-881-1739

2E12R9 (Ethernet)

2VP5U9 (Cheapernet)

B) Isolation Coupling Transformers

Partial list-Can use any equivalent IEEE 802.3

(10Base5, 10BASE2) compatible Iso-

lation Transformers.

Manufacturer

Ordering Part No.

Pulse Engineering

64102 or 64107

P.O. Box 12235

San Diego, CA 92112

Tel. (619) 268-2400

C) 20MHz Fundamental Mode Crystal

Partial list-Can use any equivalent crystal to the

specifications listed in the Am7992B

Data Sheet (page 4).

Manufacturer

Reeves-Hoffman

400 W. North Street

Carlisle, PA 17013

(717) 243-5929

Ordering Part No.

04-20423-312

AMD does not manufacture or sell any of the above

items. Interested customers should call the manufac-

turer directly for the location of the nearest representa-

tives.