FIELD BULLETIN NUMBER 28 February 1984 TS 803: EXPANDABLE MEMORY TeleVideo has advertised that the 64 Kbyte RAM in its TS 803 and TS 803H Personal Computers is expandable to 128 Kbytes. All dis- tributors, dealers, and field personnel should be aware that there are hardware and software requirements for this expansion. HARDWARE To expand the hardware to 128 Kbytes, chips must be installed (refer to Field Bulletin 22) adding the extra 64 Kbytes of memory. TeleVideo does not supply these chips. SOFTWARE Accessing the extra memory requires using the CP/M 3.0 (Plus) operating system. CP/M 2.2 is currently supplied with each TS 803 and TS 803H unit. However, this version of CP/M does not support additional memory. Users must purchase CP/M 3.0 or modify existing software to use added memory over the standard 64 Kbytes. Please be sure that dealers, customers, and end-users understand the requirements for the memory expansion in the TS 803 and TS 803H. Besides adding memory chips, they will also have to pur- chase new software. TELEDRAW: MODIFICATION TO CORRECT SYSTEM LOCKOUT The installation of the TeleDraw graphics application software includes the transfer of the GSX files from the operating system diskette. One of the required files is a file named ASSIGN.SYS. This file, shipped with the TPC I operating system Rev. A, the Ts 803 operating system version 1.5 Rev. F, and the TS 803H operating system version 1.1 Rev. B, includes a blank record at the end of the file. This blank record causes the TeleDraw software to hang up the system. The patch which follows corrects this problem. The ASSIGN.SYS file differs slightly between the TS 803, TS 803H and the TPC I. Use the corresponding instructions below in step 3. The user enters the information given in bold print below: USER: 1. Enter: ED ASSIGN.SYS SYSTEM: 2. Displays: :* USER 3. Enter: For TS 803: For TPC I and TS 803H : *T : *T : *OA : *OA : * - 1: * - 1: 21 @:ddmx80 1: 21 @:ddmx80 1: * 1: * 2: 00 @:ddts803 2: 01 @:ddts803 2: * 2: * 3: 01 @:ddts803 3: 11 @:dd7470 4: 11 @:dd7470 4: 4: * 4: *D 5: 4: *D 5: *D : *E 5: *D : *E SYSTEM: 4. Displays A> The new ASSIGN.SYS file should then be transferred to the TeleDraw diskette using the PIP.COM utility.