- 您现在的位置：买卖IC网 > Sheet目录324 > ER2-4M-90 (TechTools)EMULATOR EPROM ECONOROM II 4MEG
Troubleshooting
The distribution diskette contains a test program called ER2TEST.EXE. ER2TEST will verify the port
address, its maximum reliable transfer speed and the emulator’s functionality. The first step in
troubleshooting is to run this program and make special note of any problems it reports. The following
suggestions all assume that the emulator(s) passed all tests and that the target is known to be capable of
executing code from the EPROM socket.
Regardless of the symptom, verify the following:
1. There are no “dongles”, security keys, switch boxes or other devices between the Econo ROM II
download cable and the printer port.
2. The printer port (if configurable) is set to STANDARD, AT, NIBBLE or COMPATIBLE mode.
Specifically, insure that it is NOT set to ECP, EPP, PS2, Bi-directional or HIGH-SPEED mode.
3. The target is powered up.
4. All download, daisy-chain and target interface cables are tight and fully inserted.
5. The selected printer port is not being serviced by a print spooler or some type of TSR.
6. If the PC is a laptop or a “GREEN” PC, verify that the printer port is not disabled, powered down or
configured for any type of power savings mode.
In all cases, try “booting” clean from a DOS diskette to see if the symptoms disappear. If the loader works
under this condition, chances are good that some other program is interfering with our access to the printer
port.
Printer Port Not Found Message
The loader could not find a printer port at the specified address. Try another address with the /Pxxx
parameter. The most common addresses are 378, 278 and 3BC.
One or More Emulator(s) Not Found
Specified an existing but incorrect printer port.
This error message indicates that the specified port was found, but no emulators were found at that port.
The emulators might be plugged into a different port. Change the command line parameter /Pxxx to specify
the correct port, or move the download cable to the specified port. The most common printer port addresses
are 378, 278 and 3BC.
Transfer speed set too high for this port.
The transfer reliability is verified by the ER2TEST program. Make sure you are not trying to use a faster
speed than the test program recommended.
Also note that the test program tested the transfer speed to a single emulator. If you are daisy-chaining
several emulators, their combined load can slow down the printer port rise times, resulting in a need to
slow down the transfer speed to avoid over-running the port signals. Try the next slower transfer speed
(/D0 is the fastest speed, /D2 is the slowest speed).
Econo ROM II User’s Manual
7
Copyright ? 1996, TechTools
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
ER3-8M
EMULATOR EPROM ECONOROM III 8MEG
ESF2424
FRAME SWING ECLIPSE 19.25X19"
ESF3024
FRAME SWING ECLIPSE 24.5X19"
ESF3624
FRAME SWING ECLIPSE 29.75X19"
ESP1212
PANEL STEEL SWING 12X12" WHT
ESP1612
PANEL STEEL SWING 16X12" WHT
ESP1616
PANEL STEEL SWING 16X16" WHT
ESP1620
PANEL STEEL SWING 16X20" WHT
相关代理商/技术参数
ER25
制造商:SPC Multicomp 功能描述:EXTENSION RING 25MM PK 10 制造商:Datak Corporation 功能描述:PC Drafting Or Transfer Accessories
ER250-104X
制造商:VISHAY 制造商全称:Vishay Siliconix 功能描述:DC Filter Capacitors
ER250-254
制造商:VISHAY 制造商全称:Vishay Siliconix 功能描述:DC Filter Capacitors
ER250-503
制造商:VISHAY 制造商全称:Vishay Siliconix 功能描述:DC Filter Capacitors
ER250-504
制造商:VISHAY 制造商全称:Vishay Siliconix 功能描述:DC Filter Capacitors
ER-2643
功能描述:烙铁 SOLDERING TIP
RoHS:否 制造商:Weller 产品:Soldering Stations 类型:Digital, Iron, Stand, Cleaner 瓦特:50 W 最大温度:+ 850 F 电缆类型:US Cord Included
ER26500
制造商:EVE 功能描述:BATTERY LITHIUM 3.6V C 制造商:EVE 功能描述:BATTERY, LITHIUM, 3.6V, C
ER26500M
制造商:EVE 功能描述:BATTERY LITHIUM 3.6V C 制造商:EVE 功能描述:BATTERY, LITHIUM, 3.6V, C