This ASCII file explains how to obtain the use of UPPER MEMORY BLOCKS on a Tandy 1000SX or TX using the MICRO MAINFRAME EXPANDED MEMORY BOARD and EMS 4.0 DRIVER. 1. THE 3.2 DRIVER WILL NOT WORK. 2. YOU MUST HAVE A FULL 640K. This means you must be using an EGA or a VGA board. If you are using the Tandy built in RGB video you do not have access to a full 640k as a part of it is used for video. 3. I am using QRAM V1.0. I do not know if other versions will work. 4. You must not use OPTIMIZE as this will place QRAM back at the beginning of the CONFIG.SYS file. 5. You must place the line QRAM.SYS FL=1 FEMS after the EMS4.BIN driver. This will create 48k of UMB's. QRAM.SYS FL=0 FEMS will create 64k of UMB's but you will not have access to any of the remaining memory on your expanded memory board. Using QRAM.SYS should, according to the documentation, do the same thing, but returns a message saying QRAM has nothing to do. 6. Oddly enough, utilities DO NOT SEEM TO BE ABLE TO FIND my expanded memory. MFT says I have none as does PC Tools and MEM. MSD says I have 6423K of Extended (DON'T I WISH) and no EXPANDED, but I do have 23K of free XMS UMB's. 7. Hyperdisk has no trouble finding the expanded memory on my machine and using it as cache. 8. RAMDRIVE.SYS will not work. You have to create a ram drive using the driver that came with the MICRO MAINFRAME. I have found that the ramdrive created on my machine is a bit flaky so use with caution. Could be a generic driver out there that will work better. 9. GEOS has no problem finding and using the Expanded memory if I do not use a ramdrive. As you can see from my config.sys I am using the PCT 286 accelerator. This also works using the 8088-2 that came with the SX or a V20. I have tried both. My current DOS version is 5.0. DRIVPARM=/D:1 /F:2 FILES=40 BUFFERS=5 LASTDRIVE=F DEVICE=C:\MICRO\EMS4.BIN /Q DEVICE=C:\MICRO\EMSRAMDK.BIN /B=64 DEVICE=C:\HYPERDKE.EXE C:1024 H S T:05 V OR DEVICE=C:\QRAM\QRAM.SYS FL=1 FEMS DEVICE=C:\PCT\EXPRESS.SYS 88 CPU CACHE DEVICE=C:\QRAM\LOADHI.SYS /R:1 C:\DOS\SETVER.EXE DEVICE=C:\QRAM\LOADHI.SYS /R:1 C:\MO\MOUSE.SYS BHIGH NORTH S08 3K DEVICE=C:\QRAM\LOADHI.SYS /R:1 C:\VEGA\VEGAANSI.SYS DEVICE=C:\QRAM\LOADHI.SYS /R:1 C:\WARPVF.SYS SHELL=C:\DOS\COMMAND.COM /E:322 /F /P The following messages are reported on booting: VEGA VGA BIOS Version 1.47 (C) Copyright 1988 Video Seven Inc. BIOS ROM version 01.02.00 Compatibility Software Copyright (C) 1984, 1985, 1986 Phoenix Software Associates Ltd. and Tandy Corporation. All rights reserved. EMS 4.0 driver created August 1, 1989 for general release. For use with Micro Mainframe EMS-5150 Expanded memory board. 8-1-89 Micro Mainframe EMS System Software. PY Version 4.0 (c)1989 Micro Mainframe. ALL RIGHTS Reserved. Quick EMS RAM test selected. Number of MMF EMS Boards Installed : 1 Testing EMS RAM....... EMS software installed. Number of EMS pages available 128 Micro Mainframe EMS RAM Disk Software Version 1.1 (c)1986 Micro Mainframe All Rights Reserved. The Contents of the EMS RAM Disk have been Preserved. EMS RAM Disk installed. RAM Disk uses 64 EMS Pages (16k Each). RAM Disk Size = 1024k Cluster Size = 2 HyperDisk (TM) V20 Expanded Memory Non-Commercial 4.21, 04/22/91 by HyperWare, RR#1 Box 91, Pall Mall, TN 38577, USA (615) 864-6868 Copyright 1987-91 by Roger Cross, SN:XXXXXXXXX HyperDisk installed! Testing cache buffers. Installation complete. QRAM 1.00 Copyright (c) 1989-1990 by Quarterdeck Office Systems Serial number: XXX-XX-XXXX-XXXXXX Registered to: Les White High RAM created: 48K (D400-DFFF) 286 Express (tm) GACD V 1.39 Configured for Tandy (C) 1987 PC Technologies Inc. 8088 left active after initialization System booted on 8088 CPU Processor switching supported. Cache size = 8 KB Cache fence = 256 KB Board type = 7.22 2,261 bytes used by the driver. Press ALT and Right-Shift to toggle the cache. Press ALT and > to switch to the 80286. Press ALT and < to switch to the 8088. LOGITICH Mouse Driver Release 5.00 Device Version IBM PC,XT,AT,PS/2 & Compatibles Copyright (C) 1984, 1990 LOGITECH Inc. All rights reserved. EGA/VGA connected Mouse driver installed. VEGAANSI.SYS Version 2.0 Copyright (C) 1987 Video Seven Inc. After completion of CONFIG.SYS and AUTOEXEC.BAT, a LOADHI command brings up the following: Region Area Size Status 1 D400 - D457 1.3K Used (QRAM) 1 D458 - D473 0.4K Used (SETVER) 1 D474 - D7DD 13K Used (MOUSE) 1 D7DE - D85F 2K Used (VEGAANSI) 1 D860 - D8B7 1.3K Used (WARPVF) 1 D8B8 - D8E3 0.6K Used (IOLITE) 1 D8E4 - D8F6 0.2K Used (IOLITE) 1 D8F7 - DA69 5.7K Used (GRAPHICS) 1 DA6A - DA84 0.4K Used (IOLITE) 1 DA85 - DFFF 21K Available I no longer use WARPVF so there are 23K available as of this date. I hope you find this information useful.