= HF8V = / = SP8WJT = / = SP0106RZ =
HF-6421
PROJECT: HF-6421
DESCRIPTION: Mobile Memory module 512KB on 25CSM04
STATUS: u
PROJECT START DATE: 2021
LOCALISATION: PM
DOCUMENTATION: TM
PCB: TPD42003
DIMENSIONS: 8 x 8 mm
MEMORY CATALOG NUMBER: MM-278
FILE SYSTEM: THFS8
CAPACITY: 512 KB
TOTAL SEGMENTS: 2048
SYSTEM SEGMENTS: 8
USER SEGMENTS: 2040
MEDIA DESCRIPTOR: 0x2504
VOLUME ID: 0000-0001
It is mobile memory in RS-232 LPT case, primarily it was designed for cooperation with HF-6048 digital system which is equipped with RS-232 socket on rear panel and for PC class computers with RS-232. EEPROM 25CSM04 is assembled on small 8 x 8 mm PCB and connected to socket inside LPT connector case. I also wrote special Memory Manager program (HF-65421) for PC to manage all 2040 user files, format memory, etc...
Sources:
[1] 25CSM04 datasheet
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