Otrona on Altoma.re

Disk images

Mon, 22 Apr 2024 13:09:11 +0200

Disk dumps

This page contains unorganized notes about all the disk images I came across and their contents.

Source	Name	OS	Notes
Alto	FS_OTRONA_MASTER_V3_Mailmerge__Spellstar	CP/M 2.2.3
Alto	attache_software_cpm_225H	CP/M 2.2.5
Alto	cpm_system_master	CP/M 2.2.5
Alto	system_master_cpm	CP/M 2.2.5
Alto	wordstar_cpm	CP/M 2.2.5
Bitsavers	Attache_Boot_2.2.5	CP/M 2.2.5
Maslin	oattache	CP/M 2.2.5
Alto	attache_msdos	MS-DOS
Alto	msdos_multiplan	MS-DOS
Alto	multiplan_msdos	MS-DOS
Alto	otrona_msdos_system_master	MS-DOS
Alto	otrona_system_master	MS-DOS
Maslin	oatt8086	MS-DOS
Alto	gwbasic		Otrona 2001
Maslin	otr-util
Maslin	otr-srce

Misc commands

cpmrm -f otr1 -T imd Attache_Boot_2.2.5.IMD 0:ATTACHE.BAS
cpmcp -f otr1 -T imd Attache_Boot_2.2.5.IMD ATTACHE.BAS 0:ATTACHE.BAS
hxcfe -finput:Attache_Boot_2.2.5.IMD -foutput:test.otrona.img -conv:RAW_LOADER

Hardware

Mon, 22 Apr 2024 13:09:11 +0200

Motherboard

Model: 40-051201

Motherboard requires all power rails and the POK signal in order to boot. For testing on the bench, you can use an ATX PSU to generate -12V, 5V and 12V. You will also need to put 5V on the POK line.

Luckily it uses no custom chips, all the custom logic is implemented with bipolar PROMs. These can be dumped and duplicated, albeit programmers are hard to come by… So far the only hard to replace part I’ve seen is the 12.324 MHz crystal for the video clock

Software

Mon, 22 Apr 2024 13:09:11 +0200

System ROMs

Monitor

The Otrona boot ROM (U252) contains the following features:

Read first floppy sector into 0xFE00 and attempt to boot on it
Terminal mode
System diagnostics

It is usually on a 2732 EPROM, but the socket also accepts 2764s. These images should be compatible with every motherboard revision.

Version	Notes	Downloads
Rev D	Partial reverse-enginering available here	ROM
Rev E	No dump available yet
Rev F	Reduce CRT overscan. Terminal mode improvements. Misc. changes [1]	ROM
Rev G	Fixes CRT controller initialization issue, now conforms to RS-170 [1]	ROM
Rev H	Adds 8:16 card diagnostics	ROM
Rev X	Identical to H, except for one byte (revision display).	ROM / Source (ZASM) / Source (ZASM, cleaned)

[1]: See Technical Notes Manual for rev F & G changelogs

Floppy Format

Mon, 01 Jan 0001 00:00:00 +0000

CP/M

Physical disk layout:

Total capacity: 360k
48 TPI, 40 tracks
10 sector per track
512 bytes per sector
Skew factor: 2. Sector order: 1 6 2 7 3 8 4 9 5 10
Gap 3 is 20 bytes long

Notes:

First 3 tracks of side 0 are reserved for CP/M
The 4 last tracks of side 1 are unused
- On some disks, tracks 76/77/78 are formatted. Why?

Logical layout:

Documentation

Mon, 22 Apr 2024 13:09:17 +0200

All publications

The following table lists the Otrona documentation I know of.

Some publication numbers denotate an empty binder which is meant to be filled with other publications.

Publication #	Date	Version	Name	Download
	82/06	1.2	ATTACHE Demonstration Diskette	PDF
	82/09		Technical Notes	PDF
			Technical Notes Manual	PDF [1]
	83/01	2.2.3	BIOS Source Listing	PDF
92-05-1201	83/06	1.0	CP/M Guide
92-05-1203	83/09	1.2	Owner’s Handbook and BASIC-80 Reference Manual
92-05-1204	83/06	2.0	Wordstar-Plus Guide	PDF
92-05-1206	83/03	1.0	Service Guide	PDF
92-05-1209	83/06	2.0	Operator’s Guide
92-05-1210	83/06	1.1	Technical Manual	PDF
	82/11	1.0	Valet Guide	PDF
92-05-1210	83/06	2.0	Valet Guide	PDF
92-05-1211	83/06	2.0	Charton Guide	PDF
92-05-1224			Multiplan binder
92-05-1230	83/06	1.0	Software Guide
92-05-1231			User’s Guide Volume 1 binder
92-05-1232			User’s Guide Volume 2 binder
92-05-1233	83/11	1.1	8-16 Operator’s Guide (MS-DOS)	PDF
92-05-1240	83/11	1.1	MS-DOS Guide	PDF
92-05-1241	83/11	1.0	8-16 Service Guide Supplement	PDF
92-05-1242	83/12	1.0	Attache 8-16 Techical Manual Supplement	PDF[1]
92-05-1243	83/05	1.0	Disk Manager Supplement
95-05-1216			Valet and 10-Key Mode Keyboard Decals
95-05-1266			User’s Guide Volume 1 Introduction (8-16)	PDF
95-05-1268			User’s Guide Volume 2 Introduction (8-16)
95-05-1286			8-16 - Read This First
95-05-1287			Instructions for Assembling Attache 8:16 Documentation
95-05-1505			Contents of Attaché 8:16 System Diskettes
95-05-1506			Software Guide Addendum
95-05-1506			Valet Guide Addendum
92-07-0036	84/05	1.1	Otrona 2001 GW-Basic Guide

[1]: Scans of photocopies, might miss the cover page.