Files | SC84 computer

SC84-MCOS-from-disassembly-source.txt

The OCR bytes disassembled and reverse engineered into a form that re-assembles into the OCR bytes.

plain - 33.15 kB - 06/17/2022 at 22:32

diff-memdump-bytes-and-OCR-bytes.txt

Differences between memdump bytes and OCR bytes.
There are some, but not due to OCR errors.
Probably due to self-modifying code.

plain - 611.00 bytes - 06/17/2022 at 20:12

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SC84_MCOS_from_memory_dump.txt

Source code recreated from hex data from a live memory dump.

plain - 14.56 kB - 06/17/2022 at 20:05

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SC84_MCOS_from_memory_dump.txt.hex

A hex file for comparison with the OCR bytes.

hex - 5.51 kB - 06/17/2022 at 20:05

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SC84-MCOS-from-OCR-hex-source-txt.txt

Source code recreated from hex data from OCR scans from newsletter. First 18 bytes disassemble to a copy-and-jump routine. Scraps of source code from various documents.

plain - 19.37 kB - 06/17/2022 at 20:05

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SC84-MCOS-from-OCR-hex-source-txt.hex

A hex file for comparison with the memory dump bytes.

hex - 5.51 kB - 06/17/2022 at 20:05

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SC84-MCOS-hex-source.txt.lst.txt

Added .txt to filename so it can be read online.
Not all browsers understand *.lst is a text file.

plain - 161.92 kB - 06/17/2022 at 13:00

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wsovly1_ovr.bin

WordStar Overlay v3.00 1980 Micropro International - patched for SC84/SCIDOS (super-fast VDU access)

octet-stream - 33.50 kB - 04/06/2021 at 21:28

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wsmsgs_ovr.bin

WordStar MSGS-Overlay v3.00 1980 Micropro International - patched for SC84/SCIDOS (super-fast VDU access)

octet-stream - 24.00 kB - 04/06/2021 at 21:28

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ws_com.bin

WordStar v3.00 1980 Micropro International - patched for SC84/SCIDOS (super-fast VDU access)

octet-stream - 15.75 kB - 04/06/2021 at 21:28

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mbasic_com.bin

BASIC-80 CP/M v 5.2 14-Jul-80 - Microsoft

octet-stream - 23.88 kB - 04/06/2021 at 21:26

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basic_com.bin

Expanded Disc Basic v 1.0d - SCITEX

octet-stream - 17.50 kB - 04/06/2021 at 21:24

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bas_com.bin

Extended Disc Basic v 2.2a - SCITEX

octet-stream - 11.50 kB - 04/06/2021 at 21:24

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seldsc_com.bin

Redefines format for drive B: to formats used by other systems

octet-stream - 640.00 bytes - 04/06/2021 at 21:14

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rep_com.bin

A fast single drive copier using the Silicon Disc as intermediate media (ideal for mass copying/distributing discs)

octet-stream - 1.00 kB - 04/06/2021 at 21:11

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sysgen_com.bin

Copies/clones the SCIDOS system tracks to another disc

octet-stream - 640.00 bytes - 04/06/2021 at 21:09

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sub_com.bin

Executes a series of commands without operator involvement as per xxx.sub file (similar to DOS batch xxx.bat)

octet-stream - 1.00 kB - 04/06/2021 at 21:07

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stat_com.bin

Displays free space of currently logged discs,as well as number of files etc.

octet-stream - 3.88 kB - 04/06/2021 at 21:05

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p_com.bin

Send pre-defined control sequences to EPSON printers

octet-stream - 1.00 kB - 04/06/2021 at 21:03

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pip_com.bin

"Peripheral Interchange Program": transfers data between different I/O channels (e.g. transfer files between discs)

octet-stream - 5.75 kB - 04/06/2021 at 21:01

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debug_com.bin

Check/debug/correct .com programs by single-step or by defining break-points or pass-points

octet-stream - 6.88 kB - 04/06/2021 at 20:58

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edit_com.bin

Edit disc sectors in SCIDOS environment

octet-stream - 4.00 kB - 04/06/2021 at 20:57

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ddisc5_com.bin

Direct read or write disc access tool from system memory

octet-stream - 512.00 bytes - 04/06/2021 at 20:55

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dcopy540_com.bin

Very fast disc to disc copier/cloner 5,25" DD 40 track

octet-stream - 1.25 kB - 04/06/2021 at 20:53

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dcopy5_com.bin

Very fast disc to disc copier/cloner 5,25" DD 80 track

octet-stream - 1.25 kB - 04/06/2021 at 20:53

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flush_com.bin

Initialises (formats) the Silicon Disc drive E: (it actually clears the directory area needed after power-on)

octet-stream - 256.00 bytes - 04/06/2021 at 20:50

Download

df51_com.bin

Format and check single track 5,25" DD floppy disc

octet-stream - 768.00 bytes - 04/06/2021 at 20:48

Download

dform540_com.bin

Format and check 5,25" DD 40 track floppy disc

octet-stream - 768.00 bytes - 04/06/2021 at 20:47

Download

dform5_com.bin

Format and check 5,25" DD 80 track floppy disc

octet-stream - 768.00 bytes - 04/06/2021 at 20:46

Download

scidos_doc.txt

SCIDOS operating system manual - version 2.1D

plain - 42.12 kB - 04/06/2021 at 20:44

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20210324 SCIDOS Floppy System tracks 0 and 1 v2.txt

Hexdump of the 2 system tracks containing bootstrap and SCIDOS with description of the actual boot sequence.

plain - 53.44 kB - 03/24/2021 at 11:29

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20210324 Active SCIDOS and MCOS memory dump.txt

Memory dump of working system indicating memory locations of SCIDOS BDOS and MCOS.

plain - 42.69 kB - 03/24/2021 at 11:07

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SC84-VDU-font.txt

Source code will assemble the font ROM data.
Verified - creates same data as original ROM.

text/plain - 55.78 kB - 03/22/2021 at 20:53

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SC84-SCIDOS-ScreenShot.jpg

JPEG Image - 1.05 MB - 03/20/2021 at 11:50

Preview

SC84-MCOS-ScreenShot.jpg

JPEG Image - 1.51 MB - 03/20/2021 at 11:50

Preview

SC84-VDU.jpg

JPEG Image - 1.41 MB - 03/20/2021 at 10:17

Preview

SC84-IO.jpg

JPEG Image - 1.31 MB - 03/20/2021 at 10:17

Preview

SC84-CPU.jpg

JPEG Image - 1.06 MB - 03/20/2021 at 10:17

Preview

SCITEX BASIC 1 with OCR.pdf

BASIC manual 1, dated 1982

Adobe Portable Document Format - 727.71 kB - 03/19/2021 at 13:56

Preview

SCITEX BASIC 2 with OCR.pdf

BASIC manual 2, dated 1984

Adobe Portable Document Format - 487.85 kB - 03/19/2021 at 13:56

Preview

SC84_VDU_ChrGen_eprom.bin

Copy of original EPROM (working version on VDU card)

octet-stream - 4.00 kB - 03/19/2021 at 10:38

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SC84_CPU_MCOS_eprom.bin

Copy of original EPROM (working version on CPU card).
Diverges from the hex dump in newsletter volume 1 number 2 at location 65B hex.

octet-stream - 8.00 kB - 03/19/2021 at 10:38

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SC84 newsletter volume 1 number 2.html.zip

SC84 newsletter volume 1 number 2, converted to html.
It has a hex dump of the MCOS firmware! :-)

Zip Archive - 389.60 kB - 03/17/2021 at 16:26

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Wireless-World-1985-10-pages-35-36-and-93.pdf

Half-megabyte memory for SC84

Adobe Portable Document Format - 206.28 kB - 03/17/2021 at 15:36

Preview

Wireless-World-1984-05-pages-37-40-and-51.pdf

SC84 part 1

Adobe Portable Document Format - 401.49 kB - 05/31/2020 at 18:23

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Wireless-World-1984-06-pages-39-42.pdf

SC84 part 2

Adobe Portable Document Format - 404.96 kB - 05/31/2020 at 18:23

Preview

Wireless-World-1984-09-pages-51-53-and-63.pdf

SC84 construction tips

Adobe Portable Document Format - 396.05 kB - 05/31/2020 at 18:23

Preview

MK3801_datasheet_scans.zip

Mostek MK3801 datasheet scans

Zip Archive - 2.42 MB - 07/03/2020 at 00:31

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SC84-MCOS-from-disassembly-source.txt The OCR bytes disassembled and reverse engineered into a form that re-assembles into the OCR bytes. plain - 33.15 kB - 06/17/2022 at 22:32		Download
diff-memdump-bytes-and-OCR-bytes.txt Differences between memdump bytes and OCR bytes. There are some, but not due to OCR errors. Probably due to self-modifying code. plain - 611.00 bytes - 06/17/2022 at 20:12		Download
SC84_MCOS_from_memory_dump.txt Source code recreated from hex data from a live memory dump. plain - 14.56 kB - 06/17/2022 at 20:05		Download
SC84_MCOS_from_memory_dump.txt.hex A hex file for comparison with the OCR bytes. hex - 5.51 kB - 06/17/2022 at 20:05		Download
SC84-MCOS-from-OCR-hex-source-txt.txt Source code recreated from hex data from OCR scans from newsletter. First 18 bytes disassemble to a copy-and-jump routine. Scraps of source code from various documents. plain - 19.37 kB - 06/17/2022 at 20:05		Download
SC84-MCOS-from-OCR-hex-source-txt.hex A hex file for comparison with the memory dump bytes. hex - 5.51 kB - 06/17/2022 at 20:05		Download
SC84-MCOS-hex-source.txt.lst.txt Added .txt to filename so it can be read online. Not all browsers understand *.lst is a text file. plain - 161.92 kB - 06/17/2022 at 13:00		Download
wsovly1_ovr.bin WordStar Overlay v3.00 1980 Micropro International - patched for SC84/SCIDOS (super-fast VDU access) octet-stream - 33.50 kB - 04/06/2021 at 21:28		Download
wsmsgs_ovr.bin WordStar MSGS-Overlay v3.00 1980 Micropro International - patched for SC84/SCIDOS (super-fast VDU access) octet-stream - 24.00 kB - 04/06/2021 at 21:28		Download
ws_com.bin WordStar v3.00 1980 Micropro International - patched for SC84/SCIDOS (super-fast VDU access) octet-stream - 15.75 kB - 04/06/2021 at 21:28		Download
mbasic_com.bin BASIC-80 CP/M v 5.2 14-Jul-80 - Microsoft octet-stream - 23.88 kB - 04/06/2021 at 21:26		Download
basic_com.bin Expanded Disc Basic v 1.0d - SCITEX octet-stream - 17.50 kB - 04/06/2021 at 21:24		Download
bas_com.bin Extended Disc Basic v 2.2a - SCITEX octet-stream - 11.50 kB - 04/06/2021 at 21:24		Download
seldsc_com.bin Redefines format for drive B: to formats used by other systems octet-stream - 640.00 bytes - 04/06/2021 at 21:14		Download
rep_com.bin A fast single drive copier using the Silicon Disc as intermediate media (ideal for mass copying/distributing discs) octet-stream - 1.00 kB - 04/06/2021 at 21:11		Download
sysgen_com.bin Copies/clones the SCIDOS system tracks to another disc octet-stream - 640.00 bytes - 04/06/2021 at 21:09		Download
sub_com.bin Executes a series of commands without operator involvement as per xxx.sub file (similar to DOS batch xxx.bat) octet-stream - 1.00 kB - 04/06/2021 at 21:07		Download
stat_com.bin Displays free space of currently logged discs,as well as number of files etc. octet-stream - 3.88 kB - 04/06/2021 at 21:05		Download
p_com.bin Send pre-defined control sequences to EPSON printers octet-stream - 1.00 kB - 04/06/2021 at 21:03		Download
pip_com.bin "Peripheral Interchange Program": transfers data between different I/O channels (e.g. transfer files between discs) octet-stream - 5.75 kB - 04/06/2021 at 21:01		Download
debug_com.bin Check/debug/correct .com programs by single-step or by defining break-points or pass-points octet-stream - 6.88 kB - 04/06/2021 at 20:58		Download
edit_com.bin Edit disc sectors in SCIDOS environment octet-stream - 4.00 kB - 04/06/2021 at 20:57		Download
ddisc5_com.bin Direct read or write disc access tool from system memory octet-stream - 512.00 bytes - 04/06/2021 at 20:55		Download
dcopy540_com.bin Very fast disc to disc copier/cloner 5,25" DD 40 track octet-stream - 1.25 kB - 04/06/2021 at 20:53		Download
dcopy5_com.bin Very fast disc to disc copier/cloner 5,25" DD 80 track octet-stream - 1.25 kB - 04/06/2021 at 20:53		Download
flush_com.bin Initialises (formats) the Silicon Disc drive E: (it actually clears the directory area needed after power-on) octet-stream - 256.00 bytes - 04/06/2021 at 20:50		Download
df51_com.bin Format and check single track 5,25" DD floppy disc octet-stream - 768.00 bytes - 04/06/2021 at 20:48		Download
dform540_com.bin Format and check 5,25" DD 40 track floppy disc octet-stream - 768.00 bytes - 04/06/2021 at 20:47		Download
dform5_com.bin Format and check 5,25" DD 80 track floppy disc octet-stream - 768.00 bytes - 04/06/2021 at 20:46		Download
scidos_doc.txt SCIDOS operating system manual - version 2.1D plain - 42.12 kB - 04/06/2021 at 20:44		Download
20210324 SCIDOS Floppy System tracks 0 and 1 v2.txt Hexdump of the 2 system tracks containing bootstrap and SCIDOS with description of the actual boot sequence. plain - 53.44 kB - 03/24/2021 at 11:29		Download
20210324 Active SCIDOS and MCOS memory dump.txt Memory dump of working system indicating memory locations of SCIDOS BDOS and MCOS. plain - 42.69 kB - 03/24/2021 at 11:07		Download
SC84-VDU-font.txt Source code will assemble the font ROM data. Verified - creates same data as original ROM. text/plain - 55.78 kB - 03/22/2021 at 20:53		Download
SC84-SCIDOS-ScreenShot.jpg JPEG Image - 1.05 MB - 03/20/2021 at 11:50		Preview

SC84-MCOS-ScreenShot.jpg JPEG Image - 1.51 MB - 03/20/2021 at 11:50		Preview

SC84-VDU.jpg JPEG Image - 1.41 MB - 03/20/2021 at 10:17		Preview

SC84-IO.jpg JPEG Image - 1.31 MB - 03/20/2021 at 10:17		Preview

SC84-CPU.jpg JPEG Image - 1.06 MB - 03/20/2021 at 10:17		Preview

SCITEX BASIC 1 with OCR.pdf BASIC manual 1, dated 1982 Adobe Portable Document Format - 727.71 kB - 03/19/2021 at 13:56		Preview

SCITEX BASIC 2 with OCR.pdf BASIC manual 2, dated 1984 Adobe Portable Document Format - 487.85 kB - 03/19/2021 at 13:56		Preview

SC84_VDU_ChrGen_eprom.bin Copy of original EPROM (working version on VDU card) octet-stream - 4.00 kB - 03/19/2021 at 10:38		Download
SC84_CPU_MCOS_eprom.bin Copy of original EPROM (working version on CPU card). Diverges from the hex dump in newsletter volume 1 number 2 at location 65B hex. octet-stream - 8.00 kB - 03/19/2021 at 10:38		Download
SC84 newsletter volume 1 number 2.html.zip SC84 newsletter volume 1 number 2, converted to html. It has a hex dump of the MCOS firmware! :-) Zip Archive - 389.60 kB - 03/17/2021 at 16:26		Download
Wireless-World-1985-10-pages-35-36-and-93.pdf Half-megabyte memory for SC84 Adobe Portable Document Format - 206.28 kB - 03/17/2021 at 15:36		Preview

Wireless-World-1984-05-pages-37-40-and-51.pdf SC84 part 1 Adobe Portable Document Format - 401.49 kB - 05/31/2020 at 18:23		Preview

Wireless-World-1984-06-pages-39-42.pdf SC84 part 2 Adobe Portable Document Format - 404.96 kB - 05/31/2020 at 18:23		Preview

Wireless-World-1984-09-pages-51-53-and-63.pdf SC84 construction tips Adobe Portable Document Format - 396.05 kB - 05/31/2020 at 18:23		Preview

MK3801_datasheet_scans.zip Mostek MK3801 datasheet scans Zip Archive - 2.42 MB - 07/03/2020 at 00:31		Download